All democracies demand common public education because nothing makes people so much alike as the same education.

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

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.

I began the study of medicine, impelled by a desire for knowledge of facts and of man. The resolution to do disciplined work tied me to both laboratory and clinic for a long time to come.

What makes us afraid is our great freedom in the face of the emptiness that has still to be filled.

The study of law left me unsatisfied, because I did not know the aspects of life which it serves. I perceived only the intricate mental juggling with fictions that did not interest me.

Philosophy is tested and characterised by the way in which it appropriates its history.