Synderesis


Synderesis

Synderesis, in scholastic moral philosophy, is the natural "capacity" or disposition (habitus) of the "practical reason" to apprehend intuitively the universal "first principles" of human "action".

Reason is a single faculty, but is called differently according to the end that it assigns to its search for truth; when its goal is the mere consideration (contemplation) of truth, it is called speculative reason; when it considers truth in view of action (praxis), it is called "practical reason". In both cases reason uses demonstration (syllogism) as its tool; it proceeds from the understanding of previously known truths (premises) to the statement of a proposition (conclusion) whose truth follows necessarily from the premises.

How do we know that those premises (and consequently their conclusion) are true? Because they are themselves conclusions of previous demonstrations. Although we could take back this process of demonstration of the truth of premises as far as we want, a regression ad infinitum would deprive the demonstrative chain of certitude. Consequently it is necessary that the point of departure of human reasoning be some immediately knowable, i.e. self-evident, propositions called the "first principles", whose truth is not, indeed cannot be grasped through demonstration, but only by intuition (noûs).

The habit or disposition that allows the speculative reason to apprehend intuitively the principles that preside over its discursive reasoning is called "understanding of principles" (intellectus principiorum). The principle of "non contradiction", of "identity" and of "excluded middle", all of which are ultimately based on the notion of "being", which is the first that our reason apprehends absolutely, are all examples of those principles.

Similarly, the capacity or disposition that allows the practical reason to apprehend intuitively the principles or laws that preside over its discursive reasoning regarding human action is called "synderesis". Just as "being" is the first notion apprehended absolutely, so also "good" is the first thing that is apprehended by the practical reason, since everything that acts does so for an end which possesses the quality of goodness. That is why the first principle or law of the practical reason is "good is to be done and pursued, and evil is to be avoided". Also the precepts of natural law can be considered object of synderesis insofar as all the things towards which the human being has a natural inclination are naturally apprehended by the intellect as good and therefore as objects to be pursued, and their opposites as evils to be avoided.

Synderesis is the capacity not only to apprehend the first principles, but also to judge every step of the practical discourse in the light of those principles. But, as an intellectual disposition concerned with knowledge of the first principles of action, synderesis provides only the universal premise of the practical syllogism. Every human "action", however, is singular, contingent and takes place in particular circumstances. To complete the practical discourse and reach a conclusion regarding what has to be done "hic et nunc" and what means are to be used, other capacities are necessary besides synderesis, and to actually effect the action other faculties are required besides reason. That is why the whole picture concerning human action includes powers, dispositions and acts such as conscience, desire, will, etc., each one of which requires an independent article in this encyclopedia.

The origin of the notion of synderesis as presented here can be traced, on the one hand, to the Commentary on Ezechiel by Saint Jerome (A.D.347-419), where "syntéresin" is mentioned among the powers of the soul and is described as the spark of conscience (scintilla conscientiae) and, on the other, to the interpretation of Jerome's text given, in the 13th Century, by Albert the Great and Thomas Aquinas in the light of Aristotelian psychology and ethics. An alternative interpretation was proposed by Bonaventure, who considered synderesis as the natural inclination of the "will" towards moral good.

External links

* [http://www.iep.utm.edu/s/synderes.htm Synderesis] entry in the Internet Encyclopedia of Philosophy.
* [http://plato.stanford.edu/entries/conscience-medieval/ Medieval Theories of Conscience] entry in the Stanford Encyclopedia of Philosophy.


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