Knowledge of what is does not open the door directly to what should be.

There comes a time when the mind takes a higher plane of knowledge but can never prove how it got there.

Imagination is more important than knowledge.

The only absolute knowledge attainable by man is that life is meaningless.

The acquisition of knowledge is always of use to the intellect, because it may thus drive out useless things and retain the good. For nothing can be loved or hated unless it is first known.

Life consists in penetrating the unknown, and fashioning our actions in accord with the new knowledge thus acquired.