Dialectic (; ), also known as the dialectical method, refers originally to

dialogue Dialogue (sometimes spelled dialog in American and British English spelling differences, American English) is a written or spoken conversational exchange between two or more people, and a literature, literary and theatrical form that depicts suc ...

between people holding different points of view about a subject but wishing to arrive at the

truth Truth or verity is the Property (philosophy), property of being in accord with fact or reality.Merriam-Webster's Online Dictionarytruth, 2005 In everyday language, it is typically ascribed to things that aim to represent reality or otherwise cor ...

through reasoned

argument An argument is a series of sentences, statements, or propositions some of which are called premises and one is the conclusion. The purpose of an argument is to give reasons for one's conclusion via justification, explanation, and/or persu ...

. Dialectic resembles debate, but the concept excludes subjective elements such as emotional appeal and

rhetoric Rhetoric is the art of persuasion. It is one of the three ancient arts of discourse ( trivium) along with grammar and logic/ dialectic. As an academic discipline within the humanities, rhetoric aims to study the techniques that speakers or w ...

. It has its origins in

ancient philosophy This page lists some links to ancient philosophy, namely philosophical thought extending as far as early post-classical history (). Overview Genuine philosophical thought, depending upon original individual insights, arose in many cultures ro ...

and continued to be developed in the

Middle Ages In the history of Europe, the Middle Ages or medieval period lasted approximately from the 5th to the late 15th centuries, similarly to the post-classical period of global history. It began with the fall of the Western Roman Empire and ...

. Hegelianism refigured "dialectic" to no longer refer to a literal dialogue. Instead, the term takes on the specialized meaning of development by way of overcoming internal contradictions.

Dialectical materialism Dialectical materialism is a materialist theory based upon the writings of Karl Marx and Friedrich Engels that has found widespread applications in a variety of philosophical disciplines ranging from philosophy of history to philosophy of scien ...

, a theory advanced by

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) ...

and

Friedrich Engels Friedrich Engels ( ;"Engels"
''Random House Webster's Unabridged Dictionary''.materialist theory of history. The legacy of Hegelian and Marxian dialectics has been criticized by philosophers, such as

Karl Popper Sir Karl Raimund Popper (28 July 1902 – 17 September 1994) was an Austrian–British philosopher, academic and social commentator. One of the 20th century's most influential philosophers of science, Popper is known for his rejection of the ...

and Mario Bunge, who considered it unscientific. Dialectic implies a developmental process and so does not fit naturally within

classical logic Classical logic (or standard logic) or Frege–Russell logic is the intensively studied and most widely used class of deductive logic. Classical logic has had much influence on analytic philosophy. Characteristics Each logical system in this c ...

. Nevertheless, some twentieth-century logicians have attempted to formalize it.

Classical philosophy

classical philosophy Classical may refer to: European antiquity *Classical antiquity, a period of history from roughly the 7th or 8th century B.C.E. to the 5th century C.E. centered on the Mediterranean Sea * Classical architecture, architecture derived from Greek an ...

, dialectic ( ) is a form of

reasoning Reason is the capacity of consciously applying logic by drawing valid conclusions from new or existing information, with the aim of seeking the truth. It is associated with such characteristically human activities as philosophy, religion, scien ...

based upon dialogue of arguments and counter-arguments, advocating ''

proposition A proposition is a statement that can be either true or false. It is a central concept in the philosophy of language, semantics, logic, and related fields. Propositions are the object s denoted by declarative sentences; for example, "The sky ...

s'' (theses) and ''counter-propositions'' ( antitheses). The outcome of such a dialectic might be the refutation of a relevant proposition, or a synthesis, a combination of the opposing assertions, or a qualitative improvement of the dialogue.

Platonism

In Platonism, dialectic assumed an ontological and metaphysical role in that it became the process whereby the intellect passes from sensibles to intelligibles, rising from idea to idea until it finally grasps the supreme idea, the first principle which is the origin of all. The philosopher is consequently a "dialectician". In this sense, dialectic is a process of inquiry that does away with hypotheses up to the first principle. It slowly embraces multiplicity in unity. The philosopher Simon Blackburn wrote that the dialectic in this sense is used to understand "the total process of enlightenment, whereby the philosopher is educated so as to achieve knowledge of the supreme good, the Form of the Good".

Aristotle

Aristotle Aristotle (; 384–322 BC) was an Ancient Greek philosophy, Ancient Greek philosopher and polymath. His writings cover a broad range of subjects spanning the natural sciences, philosophy, linguistics, economics, politics, psychology, a ...

has been traditionally understood as viewing dialectic as a lesser method of reasoning than ''demonstration'', which derives a necessarily true conclusion from premises assumed to be true via

syllogism A syllogism (, ''syllogismos'', 'conclusion, inference') is a kind of logical argument that applies deductive reasoning to arrive at a conclusion based on two propositions that are asserted or assumed to be true. In its earliest form (defin ...

. Within the '' Organon'', the series comprising Aristotle's works about logic, the '' Topics'' is dedicated to dialectic—which he characterizes as argument from '' endoxa'' ("generally accredited opinions") where positions are subject to lines of questioning, to which concessions may be made in response. While Aristotle asserts "dialectic does not prove anything", he considers it to be a useful art closely related to

Medieval philosophy

Dialectic was a part of Logic, one of the three liberal arts taught in medieval universities as part of the

trivium The trivium is the lower division of the seven liberal arts and comprises grammar, logic, and rhetoric. The trivium is implicit in ("On the Marriage of Philology and Mercury") by Martianus Capella, but the term was not used until the Carolin ...

; the other elements were rhetoric and

grammar In linguistics, grammar is the set of rules for how a natural language is structured, as demonstrated by its speakers or writers. Grammar rules may concern the use of clauses, phrases, and words. The term may also refer to the study of such rul ...

. Following

Boethius Anicius Manlius Severinus Boethius, commonly known simply as Boethius (; Latin: ''Boetius''; 480–524 AD), was a Roman Roman Senate, senator, Roman consul, consul, ''magister officiorum'', polymath, historian, and philosopher of the Early Middl ...

(480–524), who drew heavily on Aristotle, many scholastic philosophers made use of dialectics in their works, including Peter Abelard, William of Sherwood, Garlandus Compotista, Walter Burley, Roger Swyneshed, William of Ockham, and

Thomas Aquinas Thomas Aquinas ( ; ; – 7 March 1274) was an Italian Dominican Order, Dominican friar and Catholic priest, priest, the foremost Scholasticism, Scholastic thinker, as well as one of the most influential philosophers and theologians in the W ...

. This dialectic (a ) was formed as follows: # The question to be determined ("It is asked whether..."); # A provisory answer to the question ("And it seems that..."); # The principal arguments in favor of the provisory answer; # An argument against the provisory answer, traditionally a single argument from authority ("On the contrary..."); # The determination of the question after weighing the evidence ("I answer that..."); # The replies to each of the initial objections. ("To the first, to the second etc., I answer that...")

Modern philosophy

The concept of dialectics was given new life at the start of the nineteenth century by

Georg Wilhelm Friedrich Hegel Georg Wilhelm Friedrich Hegel (27 August 1770 – 14 November 1831) was a 19th-century German idealist. His influence extends across a wide range of topics from metaphysical issues in epistemology and ontology, to political philosophy and t ...

, whose dialectical model of nature and of history made dialectics a fundamental aspect of reality, instead of regarding the contradictions into which dialectics leads as evidence of the limits of pure reason, as

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 ...

had argued. Hegel was influenced by

Johann Gottlieb Fichte Johann Gottlieb Fichte (; ; 19 May 1762 – 29 January 1814) was a German philosopher who became a founding figure of the philosophical movement known as German idealism, which developed from the theoretical and ethical writings of Immanuel Ka ...

's conception of synthesis, although Hegel didn't adopt Fichte's thesis–antithesis–synthesis language except to describe Kant's philosophy: rather, Hegel argued that such language was "a lifeless schema" imposed on various contents, whereas he saw his own dialectic as flowing out of "the inner life and self-movement" of the content itself. In the mid-nineteenth century, Hegelian dialectic was appropriated by

and

Friedrich Engels Friedrich Engels ( ;"Engels"
''Random House Webster's Unabridged Dictionary''.dialectical materialism Dialectical materialism is a materialist theory based upon the writings of Karl Marx and Friedrich Engels that has found widespread applications in a variety of philosophical disciplines ranging from philosophy of history to philosophy of scien ...

. These representations often contrasted dramatically and led to vigorous debate among different Marxist groups.

Hegelian dialectic

The Hegelian dialectic describes changes in the forms of thought through their own internal contradictions into concrete forms that overcome previous oppositions. This dialectic is sometimes presented in a threefold manner, as first stated by Heinrich Moritz Chalybäus, as comprising three dialectical stages of development: a ''thesis'', giving rise to its reaction; an ''antithesis'', which contradicts or negates the thesis; and the tension between the two being resolved by means of a ''synthesis''. Although, Hegel opposed these terms. By contrast, the terms ''abstract'', ''negative'', and ''concrete'' suggest a flaw or an incompleteness in any initial thesis. For Hegel, the concrete must always pass through the phase of the negative, that is, mediation. This is the essence of what is popularly called Hegelian dialectics. To describe the activity of overcoming the negative, Hegel often used the term '' Aufheben'', variously translated into English as 'sublation' or 'overcoming', to conceive of the working of the dialectic. Roughly, the term indicates preserving the true portion of an idea, thing, society, and so forth, while moving beyond its limitations. What is sublated, on the one hand, is overcome, but, on the other hand, is preserved and maintained. As in the Socratic dialectic, Hegel claimed to proceed by making implicit contradictions explicit: each stage of the process is the product of contradictions inherent or implicit in the preceding stage. In his view, the purpose of dialectics is "to study things in their own being and movement and thus to demonstrate the finitude of the partial categories of understanding". For Hegel, even history can be reconstructed as a unified dialectic, the major stages of which chart a progression from self-alienation as servitude to self-unification and realization as the rational constitutional state of free and equal citizens.

Marxist dialectic

Marxist dialectic is a form of Hegelian dialectic which applies to the study of

historical materialism Historical materialism is Karl Marx's theory of history. Marx located historical change in the rise of Class society, class societies and the way humans labor together to make their livelihoods. Karl Marx stated that Productive forces, techno ...

. Marxist dialectic is thus a method by which one can examine social and economic behaviors. It is the foundation of the philosophy of

dialectical materialism Dialectical materialism is a materialist theory based upon the writings of Karl Marx and Friedrich Engels that has found widespread applications in a variety of philosophical disciplines ranging from philosophy of history to philosophy of scien ...

, which forms the basis of historical materialism. In the Marxist tradition, "dialectic" refers to regular and mutual relationships, interactions, and processes in nature, society, and human thought. A dialectical relationship is a relationship in which two phenomena or ideas mutually impact each other, leading to development and negation. Development refers to the change and motion of phenomena and ideas from less advanced to more advanced or from less complete to more complete. Dialectical negation refers to a stage of development in which a contradiction between two previous subjects gives rise to a new subject. In the Marxist view, dialectical negation is never an endpoint, but instead creates new conditions for further development and negation.

and

Friedrich Engels Friedrich Engels ( ;"Engels"
''Random House Webster's Unabridged Dictionary''. Against this, Marx presented his own dialectic method, which he claimed to be "direct opposite" of Hegel's method. Marxist dialectics is exemplified in ''

Das Kapital ''Capital: A Critique of Political Economy'' (), also known as ''Capital'' or (), is the most significant work by Karl Marx and the cornerstone of Marxian economics, published in three volumes in 1867, 1885, and 1894. The culmination of his ...

''. As Marx explained, Class struggle is the primary contradiction to be resolved by Marxist dialectics because of its central role in the social and political lives of a society. Nonetheless, Marx and Marxists developed the concept of class struggle to comprehend the dialectical contradictions between mental and manual labor and between town and country. Hence, philosophic contradiction is central to the development of dialectics: the progress from quantity to quality, the acceleration of gradual social change; the negation of the initial development of the status quo; the negation of that negation; and the high-level recurrence of features of the original status quo. Friedrich Engels further proposed that nature itself is dialectical, and that this is "a very simple process, which is taking place everywhere and every day". His dialectical "law of the transformation of quantity into quality and vice versa" corresponds, according to Christian Fuchs, to the concept of

phase transition In physics, chemistry, and other related fields like biology, a phase transition (or phase change) is the physical process of transition between one state of a medium and another. Commonly the term is used to refer to changes among the basic Sta ...

and anticipated the concept of

emergence In philosophy, systems theory, science, and art, emergence occurs when a complex entity has properties or behaviors that its parts do not have on their own, and emerge only when they interact in a wider whole. Emergence plays a central rol ...

"a hundred years ahead of his time". Stalin and Mao interpreted the transformation of quantity into quality not as a separate law, but as a special instance of the unity and struggle of opposites. For

Vladimir Lenin Vladimir Ilyich Ulyanov ( 187021 January 1924), better known as Vladimir Lenin, was a Russian revolutionary, politician and political theorist. He was the first head of government of Soviet Russia from 1917 until Death and state funeral of ...

, the primary feature of Marx's "dialectical materialism" (Lenin's term) is its application of materialist philosophy to history and social sciences. Lenin's main contribution to the philosophy of dialectical materialism is his theory of reflection, which presents human consciousness as a dynamic reflection of the objective material world that fully shapes its contents and structure. Later, Stalin's works on the subject established a rigid and formalistic division of Marxist–Leninist theory into dialectical materialism and historical materialism. While the first was supposed to be the key method and theory of the philosophy of nature, the second was the Soviet version of the philosophy of history. Soviet

systems theory Systems theory is the Transdisciplinarity, transdisciplinary study of systems, i.e. cohesive groups of interrelated, interdependent components that can be natural or artificial. Every system has causal boundaries, is influenced by its context, de ...

pioneer Alexander Bogdanov viewed Hegelian and materialist dialectic as progressive, albeit inexact and diffuse, attempts at achieving what he called tektology, or a universal science of organization.

Dialectical naturalism

Dialectical naturalism Murray Bookchin (; January 14, 1921 – July 30, 2006) was an American social theorist, author, orator, historian, and political philosopher. Influenced by G. W. F. Hegel, Karl Marx, and Peter Kropotkin, he was a pioneer in the environmental ...

is a term coined by American philosopher

Murray Bookchin Murray Bookchin (; January 14, 1921 – July 30, 2006) was an American social theorist, author, orator, historian, and political philosopher. Influenced by G. W. F. Hegel, Karl Marx, and Peter Kropotkin, he was a pioneer in the environmental ...

to describe the philosophical underpinnings of the political program of social ecology. Dialectical naturalism explores the complex interrelationship between social problems, and the direct consequences they have on the ecological impact of human society. Bookchin offered dialectical naturalism as a contrast to what he saw as the "empyrean, basically antinaturalistic dialectical idealism" of Hegel, and "the wooden, often scientistic dialectical materialism of orthodox Marxists".

Theological dialectics

Neo-orthodoxy, in Europe also known as theology of crisis and dialectical theology, is a theological approach in

Protestantism Protestantism is a branch of Christianity that emphasizes Justification (theology), justification of sinners Sola fide, through faith alone, the teaching that Salvation in Christianity, salvation comes by unmerited Grace in Christianity, divin ...

that was developed in the aftermath of the

First World War World War I or the First World War (28 July 1914 – 11 November 1918), also known as the Great War, was a World war, global conflict between two coalitions: the Allies of World War I, Allies (or Entente) and the Central Powers. Fighting to ...

(1914–1918). It is characterized as a reaction against doctrines of nineteenth-century liberal theology and a more positive reevaluation of the teachings of the

Reformation The Reformation, also known as the Protestant Reformation or the European Reformation, was a time of major Theology, theological movement in Western Christianity in 16th-century Europe that posed a religious and political challenge to the p ...

, much of which had been in decline (especially in western Europe) since the late eighteenth century. It is primarily associated with two Swiss professors and pastors, Karl Barth (1886–1968) and Emil Brunner (1899–1966), even though Barth himself expressed his unease in the use of the term. In dialectical theology, the difference and opposition between God and human beings is stressed in such a way that all human attempts at overcoming this opposition through moral, religious or philosophical idealism must be characterized as sin. In the death of Christ humanity is negated and overcome, but this judgment also points forwards to the resurrection in which humanity is reestablished in Christ. For Barth this meant that only through God's "no" to everything human can his "yes" be perceived. Applied to traditional themes of Protestant theology, such as double predestination, this means that election and reprobation cannot be viewed as a quantitative limitation of God's action. Rather it must be seen as its "qualitative definition". Dialectic prominently figured in Bernard Lonergan's philosophy, in his books ''Insight'' and ''Method in Theology''. Michael Shute wrote about Lonergan's use of dialectic in '' The Origins of Lonergan's Notion of the Dialectic of History''. For Lonergan, dialectic is both individual and operative in community. Simply described, it is a dynamic process that results in something new: Dialectic is one of the eight functional specialties Lonergan envisaged for theology to bring this discipline into the modern world. Lonergan believed that the lack of an agreed method among scholars had inhibited substantive agreement from being reached and progress from being made compared to the natural sciences. Karl Rahner, S. J., however, criticized Lonergan's theological method in a short article entitled "Some Critical Thoughts on 'Functional Specialties in Theology'" where he stated: "Lonergan's theological methodology seems to me to be 'so generic that it really fits every science', and hence is not the methodology of theology as such, but only a very general methodology of science."

Criticisms

Friedrich Nietzsche Friedrich Wilhelm Nietzsche (15 October 1844 – 25 August 1900) was a German philosopher. He began his career as a classical philology, classical philologist, turning to philosophy early in his academic career. In 1869, aged 24, Nietzsche bec ...

viewed dialectic as a method that imposes artificial boundaries and suppresses the richness and diversity of reality. He rejected the notion that truth can be fully grasped through dialectical reasoning and offered a critique of dialectic, challenging its traditional framework and emphasizing the limitations of its approach to understanding reality. He expressed skepticism towards its methodology and implications in '' Twilight of the Idols'': "I mistrust all systematizers and I avoid them. The will to a system is a lack of integrity". In the same book, Nietzsche criticized Socrates' dialectics because he believed it prioritized reason over instinct, resulting in the suppression of individual passions and the imposition of an artificial morality. In 1937,

wrote and delivered a paper entitled "What Is Dialectic?" in which he criticized the dialectics of Hegel, Marx, and Engels for their willingness "to put up with contradictions". He argued that accepting contradiction as a valid form of logic would lead to the principle of explosion and thus trivialism. Popper concluded the essay with these words: "The whole development of dialectic should be a warning against the dangers inherent in philosophical system-building. It should remind us that

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 ...

should not be made a basis for any sort of scientific system and that philosophers should be much more modest in their claims. One task which they can fulfill quite usefully is the study of the critical methods of science." Seventy years later,

Nicholas Rescher Nicholas Rescher (; ; 15 July 1928 – 5 January 2024) was a German-born American philosopher, polymath, and author, who was a professor of philosophy at the University of Pittsburgh from 1961. He was chairman of the Center for Philosophy of Sc ...

responded that "Popper's critique touches only a hyperbolic version of dialectic", and he quipped: "Ironically, there is something decidedly dialectical about Popper's critique of dialectics." Around the same time as Popper's critique was published, philosopher Sidney Hook discussed the "sense and nonsense in dialectic" and rejected two conceptions of dialectic as unscientific but accepted one conception as a "convenient organizing category". The philosopher of science and physicist Mario Bunge repeatedly criticized Hegelian and Marxian dialectics, calling them "fuzzy and remote from science" and a "disastrous legacy". He concluded: "The so-called laws of dialectics, such as formulated by Engels (1940, 1954) and Lenin (1947, 1981), are false insofar as they are intelligible." Poe Yu-ze Wan, reviewing Bunge's criticisms of dialectics, found Bunge's arguments to be important and sensible, but he thought that dialectics could still serve some

heuristic A heuristic or heuristic technique (''problem solving'', '' mental shortcut'', ''rule of thumb'') is any approach to problem solving that employs a pragmatic method that is not fully optimized, perfected, or rationalized, but is nevertheless ...

purposes for scientists. Wan pointed out that scientists such as the American Marxist biologists

Richard Levins Richard Levins (June 1, 1930 – January 19, 2016) was a Marxist biologist, a population geneticist, biomathematician, mathematical ecologist, and philosopher of science who researched genetic diversity, diversity in human populations. Until his ...

and Richard Lewontin (authors of '' The Dialectical Biologist'') and the German-American evolutionary biologist

Ernst Mayr Ernst Walter Mayr ( ; ; 5 July 1904 – 3 February 2005) was a German-American evolutionary biologist. He was also a renowned Taxonomy (biology), taxonomist, tropical explorer, ornithologist, Philosophy of biology, philosopher of biology, and ...

, not a Marxist himself, have found agreement between dialectical principles and their own scientific outlooks, although Wan opined that Engels's "laws" of dialectics "in fact 'explain' nothing". Even some Marxists are critical of the term "dialectics". For instance,

Michael Heinrich Michael Heinrich (born 1957) is a German historian of philosophy and political scientist, specialising in the critical study of the development of Karl Marx's thought. Heinrich's work, influenced by Elmar Altvater and the Neue Marx-Lektüre of ...

wrote, "More often than not, the grandiose rhetoric about dialectics is reducible to the simple fact that everything is dependent upon everything else and is in a state of interaction and that it's all rather complicated—which is true in most cases, but doesn't really say anything."

Formalization

Defeasibility

Dialog games

Mathematics

Mathematician William Lawvere interpreted dialectics in the setting of

categorical logic __NOTOC__ Categorical logic is the branch of mathematics in which tools and concepts from category theory are applied to the study of mathematical logic. It is also notable for its connections to theoretical computer science. In broad terms, cate ...

in terms of adjunctions between idempotent monads. This perspective may be useful in the context of

theoretical computer science Theoretical computer science is a subfield of computer science and mathematics that focuses on the Abstraction, abstract and mathematical foundations of computation. It is difficult to circumscribe the theoretical areas precisely. The Associati ...

where the duality between

syntax In linguistics, syntax ( ) is the study of how words and morphemes combine to form larger units such as phrases and sentences. Central concerns of syntax include word order, grammatical relations, hierarchical sentence structure (constituenc ...

and

semantics Semantics is the study of linguistic Meaning (philosophy), meaning. It examines what meaning is, how words get their meaning, and how the meaning of a complex expression depends on its parts. Part of this process involves the distinction betwee ...

can be interpreted as a dialectic in this sense. For example, the

Curry–Howard correspondence In programming language theory and proof theory, the Curry–Howard correspondence is the direct relationship between computer programs and mathematical proofs. It is also known as the Curry–Howard isomorphism or equivalence, or the proofs-as-p ...

is such an adjunction or more generally the duality between closed monoidal categories and their internal logic.

Notes

References

External links

* – an algorithm based on the principles of classical dialectics * *
Studies in the Hegelian Dialectic
by J. M. E. McTaggart (1896) at marxists.org {{Authority control Ancient Greek logic Philosophical methodology Rhetoric