In scholastic

moral philosophy 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 et ...

, synderesis () or synteresis is habitual knowledge of the universal practical principles of moral action. The reasoning process in the field of speculative science presupposes certain fundamental axioms on which all science rests. Such are the principle of contradiction, "a thing cannot be and not be at the same time," and self-evident truths like "the whole is greater than its part". These are the first principles of the speculative intellect. In the field of moral conduct there are similar first principles of action, such as: "evil must be avoided, good done"; "Do not do to others what you would not wish to be done to yourself"; "Parents should be honoured"; "We should live temperately and act justly". Such as these are self-evident truths in the field of moral conduct which any sane person will admit if he understands them. According to the Scholastics, the readiness with which such moral truths are apprehended by the practical intellect is due to the natural habit impressed on the cognitive faculty which they call synderesis. While conscience is a dictate of the practical reason deciding that any particular action is right or wrong, synderesis is a dictate of the same practical reason which has for its object the first general principles of moral action.

History

The notion of synderesis has a long tradition, including the Commentary on

Ezekiel Ezekiel, also spelled Ezechiel (; ; ), was an Israelite priest. The Book of Ezekiel, relating his visions and acts, is named after him. The Abrahamic religions acknowledge Ezekiel as a prophet. According to the narrative, Ezekiel prophesied ...

Jerome Jerome (; ; ; – 30 September 420), also known as Jerome of Stridon, was an early Christian presbyter, priest, Confessor of the Faith, confessor, theologian, translator, and historian; he is commonly known as Saint Jerome. He is best known ...

(A.D. 347–419), where ''syntéresin'' (συντήρησιν) is mentioned among the powers of the

soul The soul is the purported Mind–body dualism, immaterial aspect or essence of a Outline of life forms, living being. It is typically believed to be Immortality, immortal and to exist apart from the material world. The three main theories that ...

and is described as the spark of conscience (''scintilla conscientiae''), and the interpretation of Jerome's text given, in the 13th century, by

Albert the Great Albertus Magnus ( 1200 – 15 November 1280), also known as Saint Albert the Great, Albert of Swabia, Albert von Bollstadt, or Albert of Cologne, was a German Dominican friar, philosopher, scientist, and bishop, considered one of the great ...

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 ...

in the light of Aristotelian psychology and

ethics Ethics is the philosophy, philosophical study of Morality, moral phenomena. Also called moral philosophy, it investigates Normativity, normative questions about what people ought to do or which behavior is morally right. Its main branches inclu ...

. An alternative interpretation of synderesis was proposed by

Bonaventure Bonaventure ( ; ; ; born Giovanni di Fidanza; 1221 – 15 July 1274) was an Italian Catholic Franciscan bishop, Cardinal (Catholic Church), cardinal, Scholasticism, scholastic theologian and philosopher. The seventh Minister General ( ...

, who considered it as the natural inclination of the

will Will may refer to: Common meanings * Will and testament, instructions for the disposition of one's property after death * Will (philosophy), or willpower * Will (sociology) * Will, volition (psychology) * Will, a modal verb - see Shall and will ...

towards moral good. The word ''synderesis'' is by most scholars reckoned to be a corruption of the

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

word for shared knowledge or conscience, ''syneidêsis'' (), the corruption appearing in the medieval manuscripts of Jerome's Commentary. The term is also used in psychiatric studies, with particular reference to

psychopathy Psychopathy, or psychopathic personality, is a personality construct characterized by impaired empathy and remorse, along with bold, disinhibited, and egocentric traits. These traits are often masked by superficial charm and immunity ...

. (term ''synderesis'' in pages 27, 28, 29, 33)

Notes

{{wiktionary, συνείδησις

External links

Medieval Theories of Conscience
entry in the ''Stanford Encyclopedia of Philosophy'' Reasoning Scholasticism Concepts in ethics