Is life worth living? It all depends on the liver.

A new idea is first condemned as ridiculous and then dismissed as trivial, until finally, it becomes what everybody knows.

The deepest longing in the human breast is the desire for appreciation.

Do every day or two something for no other reason than its difficulty.

The union of the mathematician with the poet, fervor with measure, passion with correctness, this surely is the ideal.

The great thing, then, in all education, is to make our nervous system our ally instead of our enemy.

Belief creates the actual fact.