Critique of Pure Reason

by Immanuel Kant

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What is the difference between the highest truths of reason and of experience in Kantian philosophy?

The concepts relate to analytic truth and synthetic truth.

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There are two binary opposition underlying these concepts, the synthetic – analytic and the a priori – a posteriori.

Analytic truths, like those of mathematics, are tautological, containing nothing outside themselves, but having the predicate logically inhere in the subject.

Synthetics truths involve a predicate not contained in the subject.

A priori knowledge is that gained prior to experience.

A posteriori knowledge is gained through experience.

A special class of knowledge is the synthetic a priori, that is the precondition of our understanding.

The ideal of pure reason is God.

The highest law of practical reason is the categorical imperative.

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