Not ignorance, but ignorance of ignorance, is the death of knowledge.

Every intellectual revolution which has ever stirred humanity into greatness has been a passionate protest against inert ideas. Then, alas, with pathetic ignorance of human psychology, it has proceeded by some educational scheme to bind humanity afresh with inert ideas of its own fashioning.

The future belongs to those who can rise above the confines of the earth.

A philosopher of imposing stature doesn't think in a vacuum. Even his most abstract ideas are, to some extent, conditioned by what is or is not known in the time when he lives.

Religion is the last refuge of human savagery.

The only use of a knowledge of the past is to equip us for the present. The present contains all that there is. It is holy ground; for it is the past, and it is the future.

Style, in its finest sense, is the last acquirement of the educated mind; it is also the most useful. It pervades the whole being.