I think therefore I am.

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?

Just as the world war is no white man's war, but every man's war, so is the struggle for woman suffrage no white woman's struggle, but every woman's struggle.

Like all security, privacy is hard.

Libraries can be of indispensable service in lifting the dead weight of poverty and ignorance.

I like fighting because it's honest.

While I've lived in cities for most of my adult life, I really prefer the quiet, boring, mundanity of the country. It's the best place for me to work, think, and invent.

I am not free because I can be exploded anytime.

Angels contented with their face in heaven, Seek not the praise of men.

People are losing jobs, people need to be entertained, and I want to make movies that parents and children can look forward to seeing, that can become a kind of family ritual.

Love is when he is hungry and you feed him. Love is knowing when he is hungry.

Trust life. If you trust, only then can you drop your knowledge, only then can you put your mind aside.