The moment is the sole reality.

Man is always something more than what he knows of himself. He is not what he is simply once and for all, but is a process; he is not merely an extant life, but is, within that life, endowed with possibilities through the freedom he possesses to make of himself what he will by the activities on which he decides.

As a universal history of philosophy, the history of philosophy must become one great unity.

To decide to become a philosopher seemed as foolish to me as to decide to become a poet.

Only then, approaching my fortieth birthday, I made philosophy my life's work.

Philosophic meditation is an accomplishment by which I attain Being and my own self, not impartial thinking which studies a subject with indifference.

If philosophy is practice, a demand to know the manner in which its history is to be studied is entailed: a theoretical attitude toward it becomes real only in the living appropriation of its contents from the texts.