Great authors are admirable in this respect: in every generation they make for disagreement. Through them we become aware of our differences.

One does not discover new lands without consenting to lose sight of the shore for a very long time.

To read a writer is for me not merely to get an idea of what he says, but to go off with him and travel in his company.

Believe those who are seeking the truth. Doubt those who find it.

The color of truth is gray.

There is no prejudice that the work of art does not finally overcome.

Work and struggle and never accept an evil that you can change.

No theory is good unless it permits, not rest, but the greatest work. No theory is good except on condition that one use it to go on beyond.