Peter Albert David Singer (born 6 July 1946) is an Australian
moral philosopher
Ethics is the philosophical study of moral phenomena. Also called moral philosophy, it investigates normative questions about what people ought to do or which behavior is morally right. Its main branches include normative ethics, applied ethics ...
who is Emeritus Ira W. DeCamp Professor of
Bioethics
Bioethics is both a field of study and professional practice, interested in ethical issues related to health (primarily focused on the human, but also increasingly includes animal ethics), including those emerging from advances in biology, me ...
at
Princeton University
Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...
. Singer's work specialises in
applied ethics
Applied ethics is the practical aspect of morality, moral considerations. It is ethics with respect to real-world actions and their moral considerations in private and public life, the professions, health, technology, law, and leadership. For ex ...
, approaching the subject from a
secular
Secularity, also the secular or secularness (from Latin , or or ), is the state of being unrelated or neutral in regards to religion. The origins of secularity can be traced to the Bible itself. The concept was fleshed out through Christian hi ...
,
utilitarian
In ethical philosophy, utilitarianism is a family of normative ethical theories that prescribe actions that maximize happiness and well-being for the affected individuals. In other words, utilitarian ideas encourage actions that lead to the ...
perspective. He wrote the book ''
Animal Liberation'' (1975), in which he argues for
vegetarianism
Vegetarianism is the practice of abstaining from the Eating, consumption of meat (red meat, poultry, seafood, insects as food, insects, and the flesh of any other animal). It may also include abstaining from eating all by-products of animal slau ...
, and the essay "
Famine, Affluence, and Morality", which argues the
moral imperative of
donating to help the poor around the world. For most of his career, he was a
preference utilitarian. He revealed in ''The Point of View of the Universe'' (2014), coauthored with
Katarzyna de Lazari-Radek, that he had become a
hedonistic utilitarian.
On two occasions, Singer served as chair of the
philosophy
Philosophy ('love of wisdom' in Ancient Greek) is a systematic study of general and fundamental questions concerning topics like existence, reason, knowledge, Value (ethics and social sciences), value, mind, and language. It is a rational an ...
department at
Monash University
Monash University () is a public university, public research university based in Melbourne, Victoria (state), Victoria, Australia. Named after World War I general Sir John Monash, it was founded in 1958 and is the second oldest university in the ...
, where he founded its
Centre for Human Bioethics. In 1996, he stood unsuccessfully as a
Greens candidate for the
Australian Senate
The Senate is the upper house of the Bicameralism, bicameral Parliament of Australia, the lower house being the Australian House of Representatives, House of Representatives.
The powers, role and composition of the Senate are set out in Chap ...
. In 2004, Singer was recognised as the Australian Humanist of the Year by the
Council of Australian Humanist Societies. In 2005, ''
The Sydney Morning Herald
''The Sydney Morning Herald'' (''SMH'') is a daily Tabloid (newspaper format), tabloid newspaper published in Sydney, Australia, and owned by Nine Entertainment. Founded in 1831 as the ''Sydney Herald'', the ''Herald'' is the oldest continuous ...
'' placed him among Australia's ten most influential public intellectuals. Singer is a cofounder of
Animals Australia and the founder of the non-profit organization The Life You Can Save.
Early life and education

Peter Singer was born in
Melbourne
Melbourne ( , ; Boonwurrung language, Boonwurrung/ or ) is the List of Australian capital cities, capital and List of cities in Australia by population, most populous city of the States and territories of Australia, Australian state of Victori ...
, Victoria, Australia,
on 6 July 1946.
His parents were
Austrian Jews
The history of the Jews in Austria starts after the Jewish diaspora, exodus of Jews from History of ancient Israel and Judah#Roman occupation, Judea under Roman occupation. There have been Jews in Austria since the 3rd century CE. Over the cour ...
who immigrated to Australia from
Vienna
Vienna ( ; ; ) is the capital city, capital, List of largest cities in Austria, most populous city, and one of Federal states of Austria, nine federal states of Austria. It is Austria's primate city, with just over two million inhabitants. ...
after Austria's annexation (''
Anschluss
The (, or , ), also known as the (, ), was the annexation of the Federal State of Austria into Nazi Germany on 12 March 1938.
The idea of an (a united Austria and Germany that would form a "German Question, Greater Germany") arose after t ...
'') by
Nazi Germany
Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
in 1938,
and settled in Melbourne.
His paternal grandparents were taken by the Nazis to
Łódź
Łódź is a city in central Poland and a former industrial centre. It is the capital of Łódź Voivodeship, and is located south-west of Warsaw. Łódź has a population of 655,279, making it the country's List of cities and towns in Polan ...
, and were most likely murdered, since they were never heard from again; his maternal grandfather
David Ernst Oppenheim (1881–1943), an educator and psychologist who collaborated with
Sigmund Freud
Sigmund Freud ( ; ; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating psychopathology, pathologies seen as originating fro ...
and
Alfred Adler
Alfred Adler ( ; ; 7 February 1870 – 28 May 1937) was an Austrian medical doctor, psychotherapist, and founder of the school of individual psychology. His emphasis on the importance of feelings of belonging, relationships within the family, a ...
, was murdered in the
Theresienstadt concentration camp. Oppenheim was a member of the
Vienna Psychoanalytic Society and wrote a joint article with
Sigmund Freud
Sigmund Freud ( ; ; born Sigismund Schlomo Freud; 6 May 1856 – 23 September 1939) was an Austrian neurologist and the founder of psychoanalysis, a clinical method for evaluating and treating psychopathology, pathologies seen as originating fro ...
, before joining the
Adlerian Society for Individual Psychology. Singer later wrote a biography of Oppenheim.
Singer is an
atheist
Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there no ...
and was raised in a prosperous, non-religious family. His father had a successful business importing tea and coffee.
His family rarely observed Jewish holidays, and Singer declined to have a
Bar Mitzvah
A ''bar mitzvah'' () or ''bat mitzvah'' () is a coming of age ritual in Judaism. According to Halakha, Jewish law, before children reach a certain age, the parents are responsible for their child's actions. Once Jewish children reach that age ...
. Singer attended
Preshil, and later
Scotch College. After leaving school, Singer studied law, history, and philosophy as a resident of
Ormond College at the
University of Melbourne
The University of Melbourne (colloquially known as Melbourne University) is a public university, public research university located in Melbourne, Australia. Founded in 1853, it is Australia's second oldest university and the oldest in the state ...
, earning a bachelor's degree in 1967. Singer explained that he elected to major in philosophy after his interest was piqued by discussions with his sister's then-boyfriend. He earned a master's degree for a thesis entitled ''Why Should I Be Moral?'' at the same university in 1969. He was awarded a scholarship to study at the
University of Oxford
The University of Oxford is a collegiate university, collegiate research university in Oxford, England. There is evidence of teaching as early as 1096, making it the oldest university in the English-speaking world and the List of oldest un ...
and obtained from there a
Bachelor of Philosophy in 1971 with a thesis on
civil disobedience
Civil disobedience is the active and professed refusal of a citizenship, citizen to obey certain laws, demands, orders, or commands of a government (or any other authority). By some definitions, civil disobedience has to be nonviolent to be cal ...
supervised by
R. M. Hare and published as a book in 1973. Singer names Hare, Australian philosopher
H. J. McCloskey and British philosopher J. L. H. Thomas, who taught him "how to read and understand Hegel", as his most important mentors.
In the preface to ''Hegel: A Very Short Introduction'', Singer recalls his time in Thomas' "remarkable" classes at Oxford where students were forced to "probe passages of the ''
Phenomenology
Phenomenology may refer to:
Art
* Phenomenology (architecture), based on the experience of building materials and their sensory properties
Philosophy
* Phenomenology (Peirce), a branch of philosophy according to Charles Sanders Peirce (1839� ...
'' sentence by sentence, until they yielded their meaning". One day at
Balliol College
Balliol College () is a constituent college of the University of Oxford. Founded in 1263 by nobleman John I de Balliol, it has a claim to be the oldest college in Oxford and the English-speaking world.
With a governing body of a master and ar ...
in Oxford, he had what he refers to as probably the decisive formative experience of his life. He was having a discussion after class with fellow graduate student
Richard Keshen, who would later become a professor at
Cape Breton University
Cape Breton University (CBU) is a public university located in Sydney, Nova Scotia, Canada. It is the only post-secondary degree-granting institution within the Cape Breton Regional Municipality and on Cape Breton Island.
The university is enabl ...
. During their lunch Keshen opted to have a salad after being told that the spaghetti sauce contained meat. Singer had the spaghetti. Singer eventually questioned Keshen about his reason for avoiding meat. Keshen explained his ethical objections. Singer would later state, "I'd never met a vegetarian who gave such a straightforward answer that I could understand and relate to." Keshen later introduced Singer to his vegetarian friends. Singer was able to find one book in which he could read up on the issue (''Animal Machines'' by
Ruth Harrison) and within a week or two he approached his wife saying that he thought they needed to make a change to their diet and that he did not think they could justify eating meat.
Academic career
After spending three years as a
Radcliffe lecturer at
University College, Oxford
University College, formally The Master and Fellows of the College of the Great Hall of the University commonly called University College in the University of Oxford and colloquially referred to as "Univ", is a Colleges of the University of Oxf ...
, he was a visiting professor at
New York University
New York University (NYU) is a private university, private research university in New York City, New York, United States. Chartered in 1831 by the New York State Legislature, NYU was founded in 1832 by Albert Gallatin as a Nondenominational ...
for 16 months, where he influenced the views of
James Rachels
James Webster Rachels (May 30, 1941 – September 5, 2003) was an American philosopher who specialized in ethics and animal rights.
Biography
Rachels was born in Columbus, Georgia, and graduated from Mercer University in 1962. He received his Ph ...
and
Peter Unger about animals and famine. In 1977, he returned to Melbourne where he spent most of his career, aside from appointments as visiting faculty abroad, until his move to Princeton in 1999.
In June 2011, Singer joined the professoriate of
New College of the Humanities, a private college in London, in addition to his work at Princeton. He gave his last lecture at Princeton in 2023, and has retired. He has been a regular contributor to
Project Syndicate since 2001.
According to philosopher
Helga Kuhse, Singer is almost certainly the best-known and most widely read of all contemporary philosophers.
Michael Specter wrote that Singer is among the most influential of contemporary philosophers.
He co-founded the open-access ''
Journal of Controversial Ideas'' along with bioethicist Francesca Minerva and moral philosopher
Jeff McMahan in 2018.
Applied ethics
''Practical Ethics''
Singer's ''
Practical Ethics'' (1979) is a seminal book in
applied ethics
Applied ethics is the practical aspect of morality, moral considerations. It is ethics with respect to real-world actions and their moral considerations in private and public life, the professions, health, technology, law, and leadership. For ex ...
, where he systematically applies a
preference utilitarian framework to a wide range of contemporary moral issues, such as equality, global poverty, euthanasia, ethical vegetarianism, environmental ethics, civil disobedience and violence. He challenges readers to reconsider their moral intuitions and to adopt a more rational and consistent ethical stance, often leading to controversial conclusions.
The book analyzes why and how living beings' interests should be weighed. According to Singer, ethics requires an impartial, "universal" perspective and proposes the principle of ''equal consideration of interests''. This does not mean equal treatment, as different interests (e.g., avoiding pain versus cultivating abilities) warrant different treatment, and factors like diminishing
marginal utility
Marginal utility, in mainstream economics, describes the change in ''utility'' (pleasure or satisfaction resulting from the consumption) of one unit of a good or service. Marginal utility can be positive, negative, or zero. Negative marginal utilit ...
can affect how similar interests are treated (e.g., a starving person's interest in food over a slightly hungry person's). The fundamental criterion for a being to have interests warranting equal consideration is
sentience
Sentience is the ability to experience feelings and sensations. It may not necessarily imply higher cognitive functions such as awareness, reasoning, or complex thought processes. Some writers define sentience exclusively as the capacity for ''v ...
, defined as the capacity for suffering or happiness.
Sentient beings also have interests in developing their abilities, in satisfying basic needs for food and shelter, in enjoying warm personal relationships, in being free to pursue one's projects without interference, "and many others".
The conclusion is that one must adopt the course of action that likely maximises the interests of those affected.
Singer's universalising step applies to interests regardless of who has them, whereas the Kantian's applies to the judgments of rational agents (for example in Kant's
kingdom of Ends or
John Rawls
John Bordley Rawls (; February 21, 1921 – November 24, 2002) was an American moral philosophy, moral, legal philosophy, legal and Political philosophy, political philosopher in the Modern liberalism in the United States, modern liberal tradit ...
's
original position). This universalising step, which Singer traces from
Immanuel Kant
Immanuel Kant (born Emanuel Kant; 22 April 1724 – 12 February 1804) was a German Philosophy, philosopher and one of the central Age of Enlightenment, Enlightenment thinkers. Born in Königsberg, Kant's comprehensive and systematic works ...
to Hare,
is crucial and sets him apart from those moral theorists, from
Thomas Hobbes
Thomas Hobbes ( ; 5 April 1588 – 4 December 1679) was an English philosopher, best known for his 1651 book ''Leviathan (Hobbes book), Leviathan'', in which he expounds an influential formulation of social contract theory. He is considered t ...
to
David Gauthier, who tie morality to prudence. According to Singer, universalisation leads directly to utilitarianism, on the strength of the thought that one's own interests cannot count for more than the interests of others.
[''Animal Liberation'', pp. 211, 256] Singer regards Kantian universalisation as unjust to animals.
As for the Hobbesians, Singer attempts a response in the final chapter of ''Practical Ethics'', arguing that self-interested reasons support adoption of the moral point of view, such as "the
paradox of hedonism
The paradox of hedonism, also called the pleasure paradox, refers to the practical difficulties encountered in the pursuit of pleasure. For the hedonist, constant pleasure-seeking may not yield the most actual pleasure or happiness in the long ter ...
", which counsels that happiness is best found by not looking for it, and the need most people feel to relate to something larger than their own concerns. Singer identifies as a
sentientist; sentientism is an ethical position that grants moral consideration to all sentient beings.
Effective altruism and world poverty

Singer's ideas have contributed to the rise of effective altruism. He argues that people should try not only to reduce suffering but to reduce it in the most effective manner possible. While Singer has previously written at length about the moral imperative to reduce poverty and eliminate the suffering of nonhuman animals, particularly in the
meat industry
The meat industry are the people and companies engaged in modern industrialized livestock agriculture for the production, packing, preservation and marketing of meat (in contrast to dairy products, wool, etc.). In economics, the meat industry is ...
, he writes about how the effective altruism movement is doing these things more effectively in his 2015 book ''
The Most Good You Can Do''. He is a board member of
Animal Charity Evaluators, a charity evaluator used by many members of the effective altruism community which recommends the most cost-effective animal advocacy charities and interventions.
His own organisation, The Life You Can Save (TLYCS), recommends a selection of charities deemed by charity evaluators such as
GiveWell
GiveWell is an American non-profit charity assessment and effective altruism-focused organization. GiveWell focuses primarily on the cost-effectiveness of the organizations that it evaluates, rather than traditional metrics such as the percenta ...
to be the most effective when it comes to helping those in extreme poverty. TLYCS was founded after Singer released his 2009
eponymous book, in which he argues more generally in favour of giving to charities that help to end global poverty. In particular, he expands upon some of the arguments made in his 1972 essay "
Famine, Affluence, and Morality", in which he posits that citizens of rich nations are morally obligated to give at least some of their disposable income to charities that help the global poor. He supports this using the "drowning child analogy", which states that most people would rescue a drowning child from a pond, even if it meant that their expensive clothes were ruined. He argues that similarly, lives could be saved, notably by donating to effective charities, and that as a result a significant portion of the money spent on unnecessary possessions should instead be donate to charity. Since November 2009, Singer is a member of
Giving What We Can, an international organisation whose members pledge to give at least 10% of their income to effective charities.
Animal liberation and speciesism
Published in 1975, ''
Animal Liberation'' has been cited as a formative influence on leaders of the modern
animal liberation movement. The central argument of the book is an expansion of the
utilitarian
In ethical philosophy, utilitarianism is a family of normative ethical theories that prescribe actions that maximize happiness and well-being for the affected individuals. In other words, utilitarian ideas encourage actions that lead to the ...
concept that "the greatest good of the greatest number" is the only measure of good or ethical behaviour, and Singer believes that there is no reason not to apply this principle to other animals, arguing that the boundary between human and "animal" is completely arbitrary. For example, there are far more differences between a
great ape
The Hominidae (), whose members are known as the great apes or hominids (), are a taxonomic family of primates that includes eight extant species in four genera: '' Pongo'' (the Bornean, Sumatran and Tapanuli orangutan); '' Gorilla'' (the ...
and an
oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but no ...
than between a human and a great ape, and yet the former two are lumped together as "animals", whereas we are considered "human" in a way that supposedly differentiates us from all other "animals". He popularised the term "
speciesism
Speciesism () is a term used in philosophy regarding the treatment of individuals of different species. The term has several different definitions. Some specifically define speciesism as discrimination or unjustified treatment based on an indivi ...
", which had been coined by English writer
Richard D. Ryder to describe the practice of privileging humans over other animals, and therefore argues in favour of the equal consideration of interests of all sentient beings.
In ''Animal Liberation'', Singer argues in favour of
vegetarianism
Vegetarianism is the practice of abstaining from the Eating, consumption of meat (red meat, poultry, seafood, insects as food, insects, and the flesh of any other animal). It may also include abstaining from eating all by-products of animal slau ...
and against most
animal experimentation. He stated in a 2006 interview that he does not eat meat and that he has been a vegetarian since 1971. He also said that he has "gradually become increasingly
vegan
Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a ve ...
" and that "I am largely vegan but I'm a flexible vegan. I don't go to the supermarket and buy non-vegan stuff for myself. But when I'm traveling or going to other people's places I will be quite happy to eat vegetarian rather than vegan." In 2022, Singer stated that he is not fully vegan because he occasionally consumes
oyster
Oyster is the common name for a number of different families of salt-water bivalve molluscs that live in marine or brackish habitats. In some species, the valves are highly calcified, and many are somewhat irregular in shape. Many, but no ...
s,
mussel
Mussel () is the common name used for members of several families of bivalve molluscs, from saltwater and Freshwater bivalve, freshwater habitats. These groups have in common a shell whose outline is elongated and asymmetrical compared with other ...
s, and
clam
Clam is a common name for several kinds of bivalve mollusc. The word is often applied only to those that are deemed edible and live as infauna, spending most of their lives halfway buried in the sand of the sea floor or riverbeds. Clams h ...
s due to their lack of a central nervous system. According to Singer,
meat-eating can be ethically permissible if "farms really give the animals good lives, and then humanely kill them, preferably without transporting them to slaughterhouses or disturbing them. In ''Animal Liberation'', I don't really say that it's the killing that makes
eat-eatingwrong, it's the suffering."
In an article for the online publication
Chinadialogue
Dialogue Earth, formerly China Dialogue (), is an independent, non-profit organisation based in London. It was launched on July 3, 2006. Dialogue Earth is funded by a range of institutional supporters, including several major charitable foundations ...
, Singer called Western-style meat production cruel, unhealthy, and damaging to the ecosystem. He rejected the idea that the method was necessary to meet the population's increasing demand, explaining that animals in
factory farms have to eat food grown explicitly for them, and they burn up most of the food's energy just to breathe and keep their bodies warm. In a 2010 ''
Guardian'' article he titled, "Fish: the forgotten victims on our plate", Singer drew attention to the welfare of fish. He quoted author Alison Mood's startling statistics from a report she wrote, which was released on fishcount.org.uk just a month before the ''Guardian'' article. Singer states that she "has put together what may well be the first-ever systematic estimate of the size of the annual global capture of wild fish. It is, she calculates, in the order of one trillion, although it could be as high as 2.7tn."
Some chapters of ''Animal Liberation'' are dedicated to criticising testing on animals. Unlike groups such as
PETA
People for the Ethical Treatment of Animals (PETA; ) is an American animal rights nonprofit organization based in Norfolk, Virginia, and led by Ingrid Newkirk, its international president.
Founded in March 1980 by Newkirk and animal right ...
, Singer is willing to accept testing when there is a clear benefit for medicine. In November 2006, Singer appeared on the BBC programme ''Monkeys, Rats and Me: Animal Testing'' and said that he felt that
Tipu Aziz's experiments on monkeys for research into treating Parkinson's disease could be justified. Whereas Singer has continued since the publication of ''Animal Liberation'' to promote vegetarianism and veganism, he has been much less vocal in recent years on the subject of animal experimentation. Singer has defended some of the actions of the
Animal Liberation Front
The Animal Liberation Front (ALF) is a Far-left politics, far-left international, Leaderless resistance, leaderless, decentralized movement that emerged in Britain in the 1970s, evolving from the Bands of Mercy. It operates without a formal lead ...
such as the stealing of footage from Thomas Gennarelli's laboratory in May 1984 (as shown in the documentary ''
Unnecessary Fuss'') but condemned other actions such as the use of explosives by some animal-rights activists, and sees the freeing of captive animals as largely futile when they are easily replaced. Singer features in the 2017 documentary ''Empathy'', directed by Ed Antoja, which aims to promote a more respectful way of life towards all animals. The documentary won the "Public Choice Award" of the Greenpeace Film Festival. Singer has frequently collaborated on op-eds and otherwise with animal rights advocate
Karen Dawn.
Other views
Meta-ethical views
In the past, Singer did not hold that objective moral values exist, on the basis that reason could favour both egoism and
equal consideration of interests. Singer himself adopted utilitarianism on the basis that people's preferences can be universalised, leading to a situation where one takes the "point of view of the universe" and "an impartial standpoint". In the second edition of ''Practical Ethics'', he concedes that the question of why we should act morally "cannot be given an answer that will provide everyone with overwhelming reasons for acting morally".
When co-authoring ''The Point of View of the Universe'' (2014), Singer shifted to the position that objective moral values do exist, and defends the 19th-century utilitarian philosopher
Henry Sidgwick
Henry Sidgwick (; 31 May 1838 – 28 August 1900) was an English Utilitarianism, utilitarian philosopher and economist and is best known in philosophy for his utilitarian treatise ''The Methods of Ethics''. His work in economics has also had a ...
's view that objective morality can be derived from fundamental moral axioms that are knowable by reason. Additionally, he endorses
Derek Parfit
Derek Antony Parfit (; 11 December 1942 – 2 January 2017) was a British philosopher who specialised in personal identity, rationality, and ethics. He is widely considered one of the most important and influential moral philosophers of the lat ...
's view that there are object-given reasons for action.
Furthermore, Singer and
Katarzyna de Lazari-Radek (the co-author of the book) argue that
evolutionary debunking arguments can be used to demonstrate that it is more rational to take the impartial standpoint of "the point of view of the universe", as opposed to egoism—pursuing one's own self-interest—because the existence of egoism is more likely to be the product of evolution by natural selection, rather than because it is correct, whereas taking an impartial standpoint and equally considering the interests of all sentient beings is in conflict with what we would expect from natural selection, meaning that it is more likely that impartiality in ethics is the correct stance to pursue.
Political views
Whilst a student in Melbourne, Singer campaigned against the
Vietnam War
The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...
as president of the Melbourne University Campaign Against Conscription.
He also spoke publicly for the legalization of
abortion in Australia.
Singer joined the
Australian Labor Party
The Australian Labor Party (ALP), also known as the Labor Party or simply Labor, is the major Centre-left politics, centre-left List of political parties in Australia, political party in Australia and one of two Major party, major parties in Po ...
in 1974 but resigned after disillusionment with the centrist leadership of
Bob Hawke; in 1992, he became a founding member of the
Victorian Greens. He has run for political office twice for the Greens: he received 28% of the vote in the
1994 Kooyong by-election, and received 3% of the vote in 1996 when running for the
Australian Senate
The Senate is the upper house of the Bicameralism, bicameral Parliament of Australia, the lower house being the Australian House of Representatives, House of Representatives.
The powers, role and composition of the Senate are set out in Chap ...
(elected by
proportional representation
Proportional representation (PR) refers to any electoral system under which subgroups of an electorate are reflected proportionately in the elected body. The concept applies mainly to political divisions (Political party, political parties) amon ...
). Before the 1996 election, he co-authored a book ''The Greens'' with
Bob Brown. In ''
A Darwinian Left'', Singer outlines a plan for the
political left
Left-wing politics describes the range of political ideologies that support and seek to achieve social equality and egalitarianism, often in opposition to social hierarchy either as a whole or of certain social hierarchies. Left-wing politi ...
to adapt to the lessons of
evolutionary biology
Evolutionary biology is the subfield of biology that studies the evolutionary processes such as natural selection, common descent, and speciation that produced the diversity of life on Earth. In the 1930s, the discipline of evolutionary biolo ...
. He says that
evolutionary psychology
Evolutionary psychology is a theoretical approach in psychology that examines cognition and behavior from a modern evolutionary perspective. It seeks to identify human psychological adaptations with regard to the ancestral problems they evolved ...
suggests that humans naturally tend to be self-interested. He further argues that the evidence that selfish tendencies are natural must not be taken as evidence that selfishness is "right". He concludes that
game theory
Game theory is the study of mathematical models of strategic interactions. It has applications in many fields of social science, and is used extensively in economics, logic, systems science and computer science. Initially, game theory addressed ...
(the mathematical study of strategy) and experiments in psychology offer hope that self-interested people would make short-term sacrifices for the good of others, if society provides the right conditions.
Singer argues that although humans possess selfish, competitive tendencies naturally, they have a substantial capacity for
cooperation
Cooperation (written as co-operation in British English and, with a varied usage along time, coöperation) takes place when a group of organisms works or acts together for a collective benefit to the group as opposed to working in competition ...
that also has been selected for during
human evolution
''Homo sapiens'' is a distinct species of the hominid family of primates, which also includes all the great apes. Over their evolutionary history, humans gradually developed traits such as Human skeletal changes due to bipedalism, bipedalism, de ...
. Singer's writing in ''Greater Good'' magazine, published by the
Greater Good Science Center of the
University of California, Berkeley
The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California), is a Public university, public Land-grant university, land-grant research university in Berkeley, California, United States. Founded in 1868 and named after t ...
, explores scientific studies on why people are compassionate, selfless, and capable of forming peaceful relationships. Singer has criticized the United States for receiving "oil from countries run by dictators ... who pocket most of the" financial gains, thus "keeping the people in poverty". Singer believes that the wealth of these countries "should belong to the people" within them rather than their "de facto government. In paying dictators for their oil, we are in effect buying stolen goods, and helping to keep people in poverty." Singer holds that America "should be doing more to assist people in extreme poverty". He is disappointed in U.S. foreign aid policy, deeming it "a very small proportion of our GDP, less than a quarter of some other affluent nations." Singer maintains that little "private philanthropy from the U.S." is "directed to helping people in extreme poverty, although there are some exceptions, most notably, of course, the
Gates Foundation
The Gates Foundation is an American private foundation founded by Bill Gates and Melinda French Gates. Based in Seattle, Washington, it was launched in 2000 and is reported to be the third largest charitable foundation in the world, holding $ ...
."
Singer describes himself as not
anti-capitalist
Anti-capitalism is a political ideology and Political movement, movement encompassing a variety of attitudes and ideas that oppose capitalism. Anti-capitalists seek to combat the worst effects of capitalism and to eventually replace capitalism ...
, stating in a 2010 interview with the New Left Project: "Capitalism is very far from a perfect system, but so far we have yet to find anything that clearly does a better job of meeting human needs than a regulated capitalist economy coupled with a welfare and health care system that meets the basic needs of those who do not thrive in the capitalist economy."
Singer added that "
we ever do find a better system, I'll be happy to call myself an anti-capitalist."
Similarly, in his book ''Marx'', Singer is sympathetic to
Karl Marx
Karl Marx (; 5 May 1818 – 14 March 1883) was a German philosopher, political theorist, economist, journalist, and revolutionary socialist. He is best-known for the 1848 pamphlet '' The Communist Manifesto'' (written with Friedrich Engels) ...
's criticism of capitalism but is skeptical about whether a better system is likely to be created, writing: "Marx saw that capitalism is a wasteful, irrational system, a system which controls us when we should be controlling it. That insight is still valid; but we can now see that the construction of a free and equal society is a more difficult task than Marx realized."
Singer is opposed to the death penalty, claiming that it does not effectively deter the crimes for which it is the punitive measure, and that he cannot see any other justification for it. In 2010, Singer signed a petition renouncing his
right of return to Israel because it is "a form of racist privilege that abets the colonial oppression of the Palestinians." Singer called on
Jill Stein
Jill Ellen Stein (born May 14, 1950) is an American physician, activist, and perennial candidate who was the Green Party of the United States, Green Party's nominee for President of the United States in the Jill Stein 2012 presidential campaign ...
to withdraw from the
2016 United States presidential election
United States presidential election, Presidential elections were held in the United States on November 8, 2016. The Republican Party (United States), Republican ticket of businessman Donald Trump and Indiana Governor, Indiana governor Mike P ...
in states that were close between
Hillary Clinton
Hillary Diane Rodham Clinton ( Rodham; born October 26, 1947) is an American politician, lawyer and diplomat. She was the 67th United States secretary of state in the administration of Barack Obama from 2009 to 2013, a U.S. senator represent ...
and
Donald Trump
Donald John Trump (born June 14, 1946) is an American politician, media personality, and businessman who is the 47th president of the United States. A member of the Republican Party (United States), Republican Party, he served as the 45 ...
on the grounds that the stakes were "too high".
He argued against the view that there was no significant difference between Clinton and Trump, whilst also saying that he would not advocate such a tactic in Australia's electoral system, which allows for ranking of preferences.
When writing in 2017 on Trump's
climate change denial
Climate change denial (also global warming denial) is a form of science denial characterized by rejecting, refusing to acknowledge, disputing, or fighting the scientific consensus on climate change. Those promoting denial commonly use rhetor ...
and plans to withdraw from the Paris Accords, Singer advocated a boycott of all consumer goods from the United States to pressure the Trump administration to change its environmental policies. In 2021, Singer described the
war on drugs as an expensive, ineffective and extremely harmful policy.
Euthanasia and infanticide

Singer has argued that the right to life is essentially tied to a being's capacity to hold preferences. In ''Practical Ethics'', Singer argues in favour of
abortion rights
Abortion-rights movements, also self-styled as pro-choice movements, are movements that advocate for legal access to induced abortion services, including elective abortion. They seek to represent and support women who wish to terminate their p ...
on the grounds that fetuses are neither rational nor self-aware, and can therefore hold no preferences. As a result, he argues that the preference of a mother to have an
abortion
Abortion is the early termination of a pregnancy by removal or expulsion of an embryo or fetus. Abortions that occur without intervention are known as miscarriages or "spontaneous abortions", and occur in roughly 30–40% of all pregnan ...
automatically takes precedence. In sum, Singer argues that a fetus lacks
personhood
Personhood is the status of being a person. Defining personhood is a controversial topic in philosophy and law and is closely tied with legal and political concepts of citizenship, equality, and liberty. According to law, only a legal person (ei ...
. Similar to his argument for abortion rights, Singer argues that newborns lack the essential characteristics of personhood—"rationality, autonomy, and self-consciousness"—and therefore "killing a newborn baby is never equivalent to killing a person, that is, a being who wants to go on living". Singer has clarified that his "view of when life begins isn't very different from that of opponents of abortion." He deems it not "unreasonable to hold that an individual human life begins at conception. If it doesn't, then it begins about 14 days later, when it is no longer possible for the embryo to divide into twins or other multiples." Singer disagrees with abortion rights opponents in that he does not "think that the fact that an embryo is a living human being is sufficient to show that it is wrong to kill it." Singer wishes "to see American jurisprudence, and the national abortion debate, take up the question of which capacities a human being needs to have in order for it to be wrong to kill it" as well as "when, in the development of the early human being, these capacities are present."
Singer classifies
euthanasia
Euthanasia (from : + ) is the practice of intentionally ending life to eliminate pain and suffering.
Different countries have different Legality of euthanasia, euthanasia laws. The British House of Lords Select committee (United Kingdom), se ...
as
voluntary
Voluntary may refer to:
* Voluntary (music)
* Voluntary or volunteer, person participating via volunteering/volunteerism
* Voluntary muscle contraction
See also
* Voluntary action
* Voluntariness, in law and philosophy
* Voluntaryism
Volunt ...
,
involuntary, or
non-voluntary. Voluntary euthanasia is that to which the subject consents. He argues in favour of voluntary euthanasia and some forms of non-voluntary euthanasia, including infanticide in certain instances, but opposes involuntary euthanasia. Bioethicists associated with the
disability rights
The disability rights movement is a global social movement that seeks to secure equal opportunities and equal rights for all disabled people.
It is made up of organizations of disability activists, also known as disability advocates, around ...
and
disability studies
Disability studies is an academic discipline that examines the meaning, nature, and consequences of disability. Initially, the field focused on the division between "impairment" and "disability", where impairment was an impairment of an individual ...
communities have argued that his epistemology is based on
ableist conceptions of disability. Singer's positions have also been criticised by some advocates for disability rights and
right-to-life supporters, concerned with what they see as his attacks upon
human dignity. Religious critics have argued that Singer's ethics ignores and undermines the traditional notion of the
sanctity of life
In religion and ethics, the sanctity of life, sometimes described as the inviolability of life, is a principle of implied protection regarding aspects of sentient life that are said to be holy, sacred, or otherwise of such value that they are not ...
. Singer agrees and believes the notion of the sanctity of life ought to be discarded as outdated, unscientific, and irrelevant to understanding problems in contemporary bioethics. Disability rights activists have held many protests against Singer at Princeton University and at his lectures over the years. Singer has replied that many people judge him based on secondhand summaries and short quotations taken out of context, not on his books or articles, and that his aim is to elevate the status of animals, not to lower that of humans.
American publisher
Steve Forbes
Malcolm Stevenson Forbes Jr. (; born July 18, 1947) is an American publishing executive and politician who is the editor-in-chief of ''Forbes'', a business magazine. He is the son of longtime ''Forbes'' publisher Malcolm Forbes and the grandso ...
ceased his donations to
Princeton University
Princeton University is a private university, private Ivy League research university in Princeton, New Jersey, United States. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial ...
in 1999 because of Singer's appointment to a prestigious professorship. Nazi-hunter
Simon Wiesenthal
Simon Wiesenthal (31 December 190820 September 2005) was an Austrian Holocaust survivor, Nazi hunter, and writer. He studied architecture, and was living in Lwów at the outbreak of World War II. He survived the Janowska concentration camp (la ...
wrote to organisers of a Swedish book fair to which Singer was invited that "
professor of morals ... who justifies the right to kill handicapped newborns ... is in my opinion unacceptable for representation at your level." Conservative psychiatrist
Theodore Dalrymple wrote in 2010 that Singerian moral universalism is "preposterous—psychologically, theoretically, and practically". In 2002, disability rights activist
Harriet McBryde Johnson debated Singer, challenging his belief that it is morally permissible to euthanise newborn children with severe disabilities. "Unspeakable Conversations", Johnson's account of her encounters with Singer and the pro-euthanasia movement, was published in the ''New York Times Magazine'' in 2003. In 2015, Singer debated Archbishop
Anthony Fisher on the legalisation of euthanasia at
Sydney Town Hall. Singer rejected arguments that legalising euthanasia would result in a slippery slope where the practice might become widespread as a means to remove undesirable people for financial or other motives. Singer has experienced the complexities of some of these questions in his own life. His mother had
Alzheimer's disease
Alzheimer's disease (AD) is a neurodegenerative disease and the cause of 60–70% of cases of dementia. The most common early symptom is difficulty in remembering recent events. As the disease advances, symptoms can include problems wit ...
. He said, "I think this has made me see how the issues of someone with these kinds of problems are really very difficult."
In an interview with
Ronald Bailey, published in December 2000, he explained that his sister shares the responsibility of making decisions about his mother. He said that, if he were solely responsible, his mother might not continue to live.
Surrogacy
In 1985, Singer wrote a book with the physician Deanne Wells arguing that
surrogate motherhood should be allowed and regulated by the state by establishing nonprofit 'State Surrogacy Boards', which would ensure fairness between surrogate mothers and surrogacy-seeking parents. Singer and Wells endorsed both the payment of medical expenses endured by surrogate mothers and an extra "fair fee" to compensate the surrogate mother.
Religion

Singer was a speaker at the 2012
Global Atheist Convention. He has debated with Christians including
John Lennox and
Dinesh D'Souza. Singer has pointed to the
problem of evil
The problem of evil is the philosophical question of how to reconcile the existence of evil and suffering with an Omnipotence, omnipotent, Omnibenevolence, omnibenevolent, and Omniscience, omniscient God.The Stanford Encyclopedia of Philosophy, ...
as an objection against the Christian conception of God. He stated: "The evidence of our own eyes makes it more plausible to believe that the world was not created by any god at all. If, however, we insist on believing in divine creation, we are forced to admit that the god who made the world cannot be all-powerful and all good. He must be either evil or a bungler."
In keeping with his considerations of nonhuman animals, Singer also takes issue with the
original sin
Original sin () in Christian theology refers to the condition of sinfulness that all humans share, which is inherited from Adam and Eve due to the Fall of man, Fall, involving the loss of original righteousness and the distortion of the Image ...
reply to the problem of evil, saying that, "animals also suffer from floods, fires, and droughts, and, since they are not descended from Adam and Eve, they cannot have inherited original sin."
Medical intervention in the aging process
Singer supports the view that medical intervention into the ageing process would do more to improve human life than research on therapies for specific chronic diseases in the developed world. He stated:
Singer worries that "If we discover how to slow aging, we might have a world in which the poor majority must face death at a time when members of the rich minority are only a 10th of the way through their expected lifespans", thus risking that "overcoming aging will increase the stock of injustice in the world".
Singer cautiously highlights that as with other medical developments, they would reach the more economically disadvantaged over time once developed, whereas they can never do so if they are not.
As to the concern that longer lives might contribute to
overpopulation
Overpopulation or overabundance is a state in which the population of a species is larger than the carrying capacity of its environment. This may be caused by increased birth rates, lowered mortality rates, reduced predation or large scale migr ...
, Singer notes that "success in overcoming aging could itself ... delay or eliminate
menopause
Menopause, also known as the climacteric, is the time when Menstruation, menstrual periods permanently stop, marking the end of the Human reproduction, reproductive stage for the female human. It typically occurs between the ages of 45 and 5 ...
, enabling women to have their first children much later than they can now" and thus slowing the birth rate, and also that technology may reduce the consequences of rising human populations by (for instance) enabling more zero-greenhouse gas energy sources.
In 2012, Singer's department sponsored the "Science and Ethics of Eliminating Aging" seminar at Princeton.
Protests
In 1989 and 1990, Singer's work was the subject of a number of protests in Germany. A course in ethics led by Hartmut Kliemt at the
University of Duisburg where the main text used was Singer's ''Practical Ethics'' was, according to Singer, "subjected to organised and repeated disruption by protesters objecting to the use of the book on the grounds that in one of its ten chapters it advocates active euthanasia for severely disabled newborn infants". The protests led to the course being shut down.
When Singer tried to speak during a lecture at
Saarbrücken
Saarbrücken (; Rhenish Franconian: ''Sabrigge'' ; ; ; ; ) is the capital and largest List of cities and towns in Germany, city of the state of Saarland, Germany. Saarbrücken has 181,959 inhabitants and is Saarland's administrative, commerci ...
, he was interrupted by a group of protesters including advocates for
disability rights
The disability rights movement is a global social movement that seeks to secure equal opportunities and equal rights for all disabled people.
It is made up of organizations of disability activists, also known as disability advocates, around ...
. One of the protesters expressed that entering serious discussions would be a tactical error. The same year, Singer was invited to speak in
Marburg
Marburg (; ) is a college town, university town in the States of Germany, German federal state () of Hesse, capital of the Marburg-Biedenkopf Districts of Germany, district (). The town area spreads along the valley of the river Lahn and has ...
at a European symposium on "Bioengineering, Ethics and Mental Disability". The invitation was fiercely attacked by leading intellectuals and organisations in the German media, with an article in ''
Der Spiegel
(, , stylized in all caps) is a German weekly news magazine published in Hamburg. With a weekly circulation of about 724,000 copies in 2022, it is one of the largest such publications in Europe. It was founded in 1947 by John Seymour Chaloner ...
'' comparing Singer's positions to
Nazism
Nazism (), formally named National Socialism (NS; , ), is the far-right totalitarian socio-political ideology and practices associated with Adolf Hitler and the Nazi Party (NSDAP) in Germany. During Hitler's rise to power, it was fre ...
. Eventually, the symposium was cancelled and Singer's invitation withdrawn.
A lecture at the Zoological Institute of the
University of Zurich
The University of Zurich (UZH, ) is a public university, public research university in Zurich, Switzerland. It is the largest university in Switzerland, with its 28,000 enrolled students. It was founded in 1833 from the existing colleges of the ...
was interrupted by two groups of protesters. The first group was a group of disabled people who staged a brief protest at the beginning of the lecture. They objected to inviting an advocate of euthanasia to speak. At the end of this protest, when Singer tried to address their concerns, a second group of protesters rose and began chanting ''Singer raus! Singer raus!'' ("Singer out!" in German) When Singer attempted to respond, a protester jumped on stage and grabbed his glasses, and the host ended the lecture. Singer explains "my views are not threatening to anyone, even minimally", and says that some groups play on the anxieties of those who hear only keywords that are understandably worrying (given the constant fears of ever repeating the Holocaust) if taken with any less than the full context of his belief system.
In 1991, Singer was due to speak along with
R. M. Hare and at the 15th
International Wittgenstein Symposium in
Kirchberg am Wechsel, Austria. Singer has stated that threats were made to Adolf Hübner, then the president of the Austrian Ludwig Wittgenstein Society, that the conference would be disrupted if Singer and Meggle were given a platform. Hübner proposed to the board of the society that Singer's invitation, as well as the invitations of a number of other speakers, be withdrawn. The Society decided to cancel the symposium.
In an article originally published in ''
The New York Review of Books
''The New York Review of Books'' (or ''NYREV'' or ''NYRB'') is a semi-monthly magazine with articles on literature, culture, economics, science and current affairs. Published in New York City, it is inspired by the idea that the discussion of ...
'', Singer argued that the protests dramatically increased the amount of coverage he received, saying that "instead of a few hundred people hearing views at lectures in Marburg and Dortmund, several millions read about them or listened to them on television". Despite this, Singer argues that it has led to a difficult intellectual climate, with professors in Germany unable to teach courses on applied ethics and campaigns demanding the resignation of professors who invited Singer to speak.
Criticism
Singer was criticised in 2017 for an
op-ed
An op-ed, short for "opposite the editorial page," is a type of written prose commonly found in newspapers, magazines, and online publications. They usually represent a writer's strong and focused opinion on an issue of relevance to a targeted a ...
co-written with
Jeff McMahan, in which he defends
Anna Stubblefield
Marjorie Anna Stubblefield (; born December 3, 1969) is a former professor of philosophy at Rutgers University–Newark, practitioner of facilitated communication, and convicted sexual assaulter. Stubblefield was found guilty of raping a man with ...
, who was convicted of aggravated sexual assault against D.J., a man with severe physical disability. Singer and McMahan argued that the judge refused to consider independent evidence that D.J. was indirectly able to communicate, and could have been interrogated. They argued that Anna Stubblefield believes her love to be reciprocal, and that D.J. still had not given sign of hostility towards Stubblefield.
Nathan J. Robinson, founder of
''Current Affairs'', criticised when Singer and McMahan wrote that even supposing that D.J. is not just physically but also cognitively impaired (which they contest), then D.J. may not even understand the concept of consent, and it "seems reasonable to assume that the experience was pleasurable to him", as "he was capable of struggling to resist." Robinson called this a "rape", and considers that Singer and McMahan's argument implies that it would be permissible to rape or sexually assault sufficiently disabled people as long as they do not try to resist.
Roger Scruton
Sir Roger Vernon Scruton, (; 27 February 194412 January 2020) was an English philosopher, writer, and social critic who specialised in aesthetics and political philosophy, particularly in the furtherance of Conservatism in the United Kingdom, c ...
was critical of the
consequentialist
In moral philosophy, consequentialism is a class of normative, teleological ethical theories that holds that the consequences of one's conduct are the ultimate basis for judgement about the rightness or wrongness of that conduct. Thus, from ...
, utilitarian approach of Singer.
Scruton alleged that Singer's works, including ''
Animal Liberation'' (1975), "contain little or no philosophical argument. They derive their radical moral conclusions from a vacuous utilitarianism that counts the pain and pleasure of all living things as equally significant and that ignores just about everything that has been said in our philosophical tradition about the real distinction between persons and animals."
Anthropologist Xenia Cherkaev has criticised Singer's foundational essay "Animal Liberation", published in 1973, for comparing the interests of "slum children" with the interests of the rats that bite them – at a time when poor and predominantly Black American children were regularly attacked and bitten by rats, sometimes fatally.
Recognition
Singer was elected a corresponding fellow of the
Australian Academy of the Humanities
The Australian Academy of the Humanities was established by Royal Charter in 1969 to advance scholarship and public interest in the humanities in Australia. It operates as an independent not-for-profit organisation partly funded by the Australi ...
in 1981. He was inducted into the United States
Animal Rights Hall of Fame in 2000. In June 2012, Singer was appointed a
Companion of the Order of Australia
The Order of Australia is an Australian honours and awards system, Australian honour that recognises Australian citizens and other persons for outstanding achievement and service. It was established on 14 February 1975 by Elizabeth II, Monarch ...
(AC) for "eminent service to philosophy and bioethics as a leader of public debate and communicator of ideas in the areas of global poverty, animal welfare and the human condition". Singer received ''
Philosophy Now
''Philosophy Now'' is a bimonthly philosophy magazine sold from news-stands and book stores in the United Kingdom, United States, Australia, and Canada; it is also available on digital devices, and online. It aims to appeal to the general educat ...
''s 2016 Award for Contributions in the Fight Against Stupidity for his efforts "to disturb the comfortable complacency with which many of us habitually ignore the desperate needs of others ... particularly for this work as it relates to the Effective Altruism movement".
In 2018, Singer was cited in the book ''Rescuing Ladybugs'' by author and animal advocate
Jennifer Skiff as a "hero among heroes in the world" who, in arguing against speciesism "gave the modern world permission to believe what we innately know – that animals are sentient and that we have a moral obligation not to exploit or mistreat them."
The book states that Singer's "moral philosophy on animal equality was sparked when he asked a fellow student at Oxford University a simple question about his eating habits."
In 2021, Singer was awarded the US$1-million
Berggruen Prize, and decided to give it away. He decided in particular to give half of the prize money to his foundation The Life You Can Save, because "over the last three years, each dollar spent by it generated an average of $17 in donations for its recommended nonprofits". He added he has never taken money for personal use from the organisation. Moreover, he plans to donate more than a third of the money to organisations combating
intensive animal farming
Intensive animal farming, industrial livestock production, and macro-farms, also known as factory farming, is a type of intensive agriculture, specifically an approach to mass animal husbandry designed to maximize production while minimizing cos ...
, and recommended as effective by
Animal Charity Evaluators.
For 2022, Singer received the
BBVA Foundation Frontiers of Knowledge Award in the category of "Humanities and Social Sciences".
Singer serves on the Executive Advisory Board of the
World.Minds Foundation, contributing to global ethical discussions on science, society, and responsibility.
Personal life
Since 1968, Singer has been married to Renata Singer (née Diamond; born in 1947 in
Wałbrzych
Wałbrzych (; ; or ''Walmbrich''; or ) is a city located in the Lower Silesian Voivodeship, in southwestern Poland, seat of Wałbrzych County. Wałbrzych lies approximately southwest of the voivodeship capital Wrocław and about from the Czec ...
, Poland). They have three children: Ruth, a textile artist; Marion, a law student and youth arts specialist; and Esther, a linguist and teacher. Singer's wife is a novelist and author, and has collaborated on publications with her husband. Until 2021, she was president of the Kadimah Jewish Cultural Centre and National Library in Melbourne.
Publications
Singly authored books
* ''Democracy and Disobedience'', Clarendon Press, Oxford, 1973;
Oxford University Press
Oxford University Press (OUP) is the publishing house of the University of Oxford. It is the largest university press in the world. Its first book was printed in Oxford in 1478, with the Press officially granted the legal right to print books ...
, New York, 1974; Gregg Revivals, Aldershot, Hampshire, 1994
* ''
Animal Liberation: A New Ethics for our Treatment of Animals'', New York Review/Random House, New York, 1975; Cape, London, 1976; Avon, New York, 1977; Paladin, London, 1977; Thorsons, London, 1983. Harper Perennial Modern Classics, New York, 2002. Harper Perennial Modern Classics, New York, 2009.
* ''
Practical Ethics'', Cambridge University Press, Cambridge, 1980; second edition, 1993; third edition, 2011. , ,
* ''Marx'', Oxford University Press, Oxford, 1980; Hill & Wang, New York, 1980; reissued as ''Marx: A Very Short Introduction'', Oxford University Press, 2000; second edition published 2018; also included in full in K. Thomas (ed.), ''Great Political Thinkers: Machiavelli, Hobbes, Mill and Marx'', Oxford University Press, Oxford, 1992
* ''
The Expanding Circle: Ethics and Sociobiology'', Farrar, Straus and Giroux, New York, 1981; Oxford University Press, Oxford, 1981; New American Library, New York, 1982.
* ''Hegel'', Oxford University Press, Oxford and New York, 1982; reissued as ''Hegel: A Very Short Introduction'', Oxford University Press, 2001; also included in full in ''German Philosophers: Kant, Hegel, Schopenhauer, Nietzsche'', Oxford University Press, Oxford, 1997
* ''
How Are We to Live? Ethics in an Age of Self-interest'', Text Publishing, Melbourne, 1993; Mandarin, London, 1995; Prometheus, Buffalo, NY, 1995; Oxford University Press, Oxford, 1997
* ''Rethinking Life and Death: The Collapse of Our Traditional Ethics'', Text Publishing, Melbourne, 1994; St Martin's Press, New York, 1995; reprint 2008. Oxford University Press, Oxford, 1995
* ''Ethics into Action:
Henry Spira and the Animal Rights Movement'', Rowman and Littlefield, Lanham, Maryland, 1998; Melbourne University Press, Melbourne, 1999
* ''
A Darwinian Left'', Weidenfeld and Nicolson, London, 1999; Yale University Press, New Haven, 2000.
* ''
One World: The Ethics of Globalisation'', Yale University Press, New Haven, 2002; Text Publishing, Melbourne, 2002; 2nd edition, pb, Yale University Press, 2004; Oxford Longman, Hyderabad, 2004.
* ''Pushing Time Away: My Grandfather and the Tragedy of Jewish Vienna'', Ecco Press, New York, 2003; HarperCollins Australia, Melbourne, 2003; Granta, London, 2004
* ''The President of Good and Evil: The Ethics of George W. Bush'', Dutton, New York, 2004; Granta, London, 2004; Text, Melbourne, 2004.
* ''
The Life You Can Save: Acting Now to End World Poverty''. New York: Random House 2009.
[Reviewed at ]
* ''
The Most Good You Can Do: How Effective Altruism Is Changing Ideas About Living Ethically''. Yale University Press, 2015.
* ''Ethics in the Real World: 82 Brief Essays on Things That Matter''. Princeton University Press, 2016.
* ''Why Vegan? Eating Ethically''. Liveright, 2020.
* ''Consider the Turkey''. Princeton University Press, 2024.
Coauthored books
* ''Animal Factories'' (co-author with James Mason), Crown, New York, 1980
* ''The Reproduction Revolution: New Ways of Making Babies'' (co-author with Deane Wells), Oxford University Press, Oxford, 1984. revised American edition, ''Making Babies'', Scribner's New York, 1986
* ''Animal Liberation: A Graphic Guide'' (co-author with Lori Gruen), Camden Press, London, 1987
* ''
Should the Baby Live? The Problem of Handicapped Infants'' (co-author with Helga Kuhse), Oxford University Press, Oxford, 1985; Oxford University Press, New York, 1986; Gregg Revivals, Aldershot, Hampshire, 1994.
* ''Ethical and Legal Issues in Guardianship Options for Intellectually Disadvantaged People'' (co-author with Terry Carney), Human Rights Commission Monograph Series, no. 2, Australian Government Publishing Service, Canberra, 1986
* ''
How Ethical Is Australia? An Examination of Australia's Record as a Global Citizen'' (with Tom Gregg), Black Inc, Melbourne, 2004
* ''The Ethics of What We Eat: Why Our Food Choices Matter'' (or ''The Way We Eat: Why Our Food Choices Matter''), Rodale, New York, 2006 (co-author with
Jim Mason); Text, Melbourne; Random House, London. Audio version: Playaway.
* ''Eating'' (co-authored with Jim Mason), Arrow, London, 2006
* ''Stem Cell Research: the ethical issues''. (co-edited by Lori Gruen, Laura Grabel, and Peter Singer). New York: Blackwells. 2007.
* ''The Future of Animal Farming: Renewing the Ancient Contract'' (with Marian Stamp Dawkins, and Roland Bonney) 2008. New York: Wiley-Blackwell.
* ''The Point of View of the Universe: Sidgwick and Contemporary Ethics'' (with Katarzyna de Lazari-Radek), Oxford University Press, 2014
* ''Utilitarianism: A Very Short Introduction'' (with Katarzyna de Lazari-Radek), Oxford University Press, 2017
* ''The Buddhist and the Ethicist: Conversations on Effective Altruism, Engaged Buddhism, and How to Build a Better World'' (with Shih Chao-Hwei), Shambhala Publications, 2023
Edited and coedited volumes and anthologies
* ''Test-Tube Babies: a guide to moral questions, present techniques, and future possibilities'' (co-edited with William Walters), Oxford University Press, Melbourne, 1982
* ''Animal Rights and Human Obligations: An Anthology'' (co-editor with
Tom Regan), Prentice-Hall, New Jersey, 1976. 2nd revised edition, Prentice-Hall, New Jersey, 1989
* ''
In Defence of Animals'' (ed.), Blackwells, Oxford, 1985; Harper & Row, New York, 1986.
* ''Applied Ethics'' (ed.), Oxford University Press, Oxford, 1986
* ''Embryo Experimentation'' (co-editor with Helga Kuhse, Stephen Buckle, Karen Dawson and Pascal Kasimba), Cambridge University Press, Cambridge, 1990; paperback edition, updated, 1993
* ''A Companion to Ethics'' (ed.), Basil Blackwell, Oxford, 1991; paperback edition, 1993
* ''Save the Animals!'' (Australian edition, co-author with Barbara Dover and Ingrid Newkirk), Collins Angus & Robertson, North Ryde, NSW, 1991
* ''The Great Ape Project: Equality Beyond Humanity'' (co-editor with Paola Cavalieri), Fourth Estate, London, 1993; hardback, St Martin's Press, New York, 1994; paperback, St Martin's Press, New York, 1995
* ''Ethics'' (ed.), Oxford University Press, Oxford, 1994
* ''Individuals, Humans and Persons: Questions of Life and Death'' (co-author with Helga Kuhse), Academia Verlag, Sankt Augustin, Germany, 1994
* ''The Greens'' (co-author with Bob Brown), Text Publishing, Melbourne, 1996
* ''The Allocation of Health Care Resources: An Ethical Evaluation of the "QALY" Approach'' (co-author with John McKie, Jeff Richardson and Helga Kuhse), Ashgate/Dartmouth, Aldershot, 1998
* ''A Companion to Bioethics'' (co-editor with Helga Kuhse), Blackwell, Oxford, 1998
* ''Bioethics. An Anthology'' (co-editor with Helga Kuhse), Blackwell, 1999/ Oxford, 2006
* ''The Moral of the Story: An Anthology of Ethics Through Literature'' (co-edited with Renata Singer), Blackwell, Oxford, 2005
* ''In Defense of Animals. The Second Wave'' (ed.), Blackwell, Oxford, 2005
* ''The Bioethics Reader: Editors' Choice''. (co-editor with Ruth Chadwick, Helga Kuhse, Willem Landman and Udo Schüklenk). New York: Blackwell, 2007
* ''
J. M. Coetzee
John Maxwell Coetzee Order of Australia, AC Fellow of the Royal Society of Literature, FRSL Order of Mapungubwe, OMG (born 9 February 1940) is a South African and Australian novelist, essayist, linguist, and translator. The recipient of the 2003 ...
and Ethics: Philosophical Perspectives on Literature'' (co-editor with A. Leist), New York: Columbia University Press, 2010
* ''
The Golden Ass
The ''Metamorphoses'' of Apuleius, which Augustine of Hippo referred to as ''The Golden Ass'' (Latin: ''Asinus aureus''), is the only ancient Roman novel in Latin to survive in its entirety.
The protagonist of the novel is Lucius. At the end of ...
'', by
Apuleius
Apuleius ( ), also called Lucius Apuleius Madaurensis (c. 124 – after 170), was a Numidians, Numidian Latin-language prose writer, Platonist philosopher and rhetorician. He was born in the Roman Empire, Roman Numidia (Roman province), province ...
(edited and abridged by Peter Singer, translated by Ellen D. Finkelpearl), New York: Liveright Publishing Corporation; London: W.W. Norton and Company, Ltd., 2021
Anthologies of Singer's work
* ''Writings on an Ethical Life'', Ecco, New York, 2000; Fourth Estate, London, 2001.
* ''Unsanctifying Human Life: Essays on Ethics'' (edited by Helga Kuhse), Blackwell, Oxford, 2001
Commentary volumes on Singer's work
*
Jamieson, Dale (ed.). ''Singer and His Critics''. Wiley-Blackwell, 1999
*
Schaler, Jeffrey A. (ed.). ''Peter Singer Under Fire: The Moral Iconoclast Faces His Critics''. Chicago: Open Court Publishers, 2009
* Davidow, Ben (ed.). "Peter Singer" ''Uncaged: Top Activists Share Their Wisdom on Effective Farm Animal Advocacy''. Davidow Press, 2013
See also
*
Animal liberationist
*
Argument from marginal cases
*
Demandingness objection
*
Intrinsic value (animal ethics)
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List of animal rights advocates
Advocates of animal rights believe that many or all Animal consciousness, sentient animals have moral worth that is independent of their utility for humans, and that their most basic interests—such as in avoiding suffering—should be afforded ...
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J. Howard Moore
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Utilitarian bioethics
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Veganism
Veganism is the practice of abstaining from the use of animal products and the consumption of animal source foods, and an associated philosophy that rejects the commodity status of animals. A person who practices veganism is known as a vega ...
References
External links
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Column archiveat Project Syndicate
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{{DEFAULTSORT:Singer, Peter
1946 births
Living people
20th-century Australian non-fiction writers
20th-century Australian philosophers
21st-century Australian non-fiction writers
21st-century Australian philosophers
Academics from Melbourne
Alumni of University College, Oxford
Analytic philosophers
Animal ethicists
Australian animal rights scholars
Atheist philosophers
Australian animal rights activists
Australian animal welfare scholars
Australian atheists
Australian ethicists
Australian Greens candidates
Australian humanists
Australian male non-fiction writers
Australian people of Austrian-Jewish descent
Bioethicists
Carnegie Council for Ethics in International Affairs
Companions of the Order of Australia
Environmental philosophers
Jewish atheists
Jewish Australian writers
Jewish philosophers
Academic staff of Monash University
New York University faculty
People associated with effective altruism
People associated with the Oxford Group (animal rights)
People educated at Scotch College, Melbourne
Australian political philosophers
Princeton University faculty
University of Melbourne alumni
Academic staff of the University of Melbourne
Utilitarians
Australian vegetarianism activists
Writers from Melbourne
Fellows of the Australian Academy of the Humanities