What is A Priori?

Meaning of A Priori

A priori is an expression used to refer to a principle prior to experience . A priori is an adverbial phrase from the Latin language, often used to indicate ” what comes before “.

Example: on the victory in the elections, a priori, it is not possible to draw conclusions.

Unlike “ a priori ”, the Latin expression “ a posteriori ” refers to reasoning that goes back from one effect to another.

A priori in Philosophy

In Philosophy, the phrase a priori refers to knowledge acquired without experience, which is acquired through deduction.

Man’s research on knowledge is ancient. Various philosophical theories try to unravel the problems.

For René Descartes, reason is a faculty independent of experience, but rather by innate knowledge, a priori, where it is limited to a purely analytical judgment, as in his phrase ” I think, therefore I am “.


Rationalism accepts the existence of innate truths and a priori truths. Kant made a synthesis of rationalism and empiricism, maintaining the data in experience with reference to all knowledge and at the same time affirming the existence of a priori forms.

In the book ” Critique of Judgment “, Kant established the ” a priori” character of aesthetic judgment, defining beauty as an “end without end” and calling transcendental aesthetics the science of all a priori principles of sensibility.


some  synonyms of a priori


  • Initially, by deduction
  • Assumption
  • By presupposition

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