I hope that posterity will judge me kindly, not only as to the things which I have explained, but also to those which I have intentionally omitted so as to leave to others the pleasure of discovery.

We do not describe the world we see, we see the world we can describe.

Whenever anyone has offended me, I try to raise my soul so high that the offense cannot reach it.

De omnibus dubitandum

Divide each difficulty into as many parts as is feasible and necessary to resolve it.

Conquer yourself rather than the world.

The reading of all good books is like a conversation with the finest minds of past centuries.

The chief cause of human errors is to be found in the prejudices picked up in childhood.

Doubt is the origin of wisdom

The only thing we have power over in the universe is our own thoughts.

How can you be certain that your whole life is not a dream?

If you are afraid of being lonely, don't try to be right.

Without a Sabbath, no worship; without worship, no religion; and without religion, no permanent freedom.

I'm a dark horse, running on a dark race course

Educators must resist the quest for certainty. If there were certainty there would be no scientific advancement. So it is with morals and patriotism.

What is the natural reaction when told you have a hopeless mental illness? That diagnosis does you in; that, and the humiliation of being there. I mean, the indignity you're subjected to. My God.

When I paint I feel that all the artists of the past are behind me.

The truly great person is the one who gives you a chance.

The great secret of morals is Love; or a going out of our own nature, and an identification of ourselves with the beautiful which exists in thought, action, or person, not our own.

Put no faith in salvation through the political order.

Hold on to your divine blush, your innate rosy magic, or end up brown. Once you're brown, you'll find out you're blue. As blue as indigo. And you know what that means. Indigo. Indigoing. Indigone.