Philosophy starts with doubt and loves only truth.

The best path through life is the highway.

I wonder whether I should gain anything by the attempt to assume a character which is not mine. My wavering manner, born of doubt and scruple, has at least the advantage of rendering all the different shades of my thought, and of being sincere. If it were to become terse, affirmative, resolute, would it not be a mere imitation?

We are always making God our accomplice so that we may legalize our own inequities.

Tell me what you feel in your room when the full moon is shining in upon you and your lamp is dying out, and I will tell you how old you are, and I shall know if you are happy.

At the bottom of the modern man there is always a great thirst for self-forgetfulness, self-distraction . . . and therefore he turns away from all those problems and abysses which might recall to him his own nothingness.

Conquering any difficulty always gives one a secret joy, for it means pushing back a boundary-line and adding to one's liberty.