Philosophy as practice does not mean its restriction to utility or applicability, that is, to what serves morality or produces serenity of soul.

We must learn to talk with each other, and we mutually must understand and accept one another in our extraordinary differences.

My own being can be judged by the depths I reach in making these historical origins my own.

Even scientific knowledge, if there is anything to it, is not a random observation of random objects; for the critical objectivity of significant knowledge is attained as a practice only philosophically in inner action.

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.

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

Reason is like an open secret that can become known to anyone at any time; it is the quiet space into which everyone can enter through his own thought