Obsession is the wellspring of genius and madness.

Do not reveal what you have thought upon doing, but by wise council keep it secret being determined to carry it into execution.

Anywhere you go in the world is what you make of it, not what you read in books.

Be curious, not judgmental.

Let him who would move the world first move himself.

Yes, I guess you could say I am a loner, but I feel more lonely in a crowed room with boring people than I feel on my own.

Desire is poverty. Desire is the greatest impurity of the mind. Desire is the motive force for action. Desire in the mind is the real impurity. Even a spark of desire is a very great evil.

There is no question climate change is happening. The only arguable point is what part humans are playing in it.

True knowledge lies in knowing how to live.

Boredom is the root of all evil - the despairing refusal to be oneself.

Moderation in temper is always a virtue; but moderation in principle is always a vice.

The only way to get the best of an argument is to avoid it.

Men are not prisoners of fate, but only prisoners of their own minds.

Criticize the act, not the person.

The only real laughter comes from despair.

Simplicity is the ultimate sophistication.

It is not enough to have a good mind; the main thing is to use it well.

Great dreams of great dreamers are always transcended.

The difference between stupidity and genius is that genius has its limits.

Where wisdom reigns, there is no conflict between thinking and feeling.

All imperfection is easier to tolerate if served up in small doses.