Mathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency.

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?

You have the power within you to choose a life of love and beauty or choose a life of misery and destruction. What you chose, that you will attract and that you will manifest.

You are the sculptor of your success. Chisel and carve yourself into excellence.

Why is it that when people have no capacity for private usefulness they should be so anxious to serve the public?

A people so primitive that they did not know how to get money except by working for it.

We been on the road for 18 hours... I need a bath, some chow... and then you and me sit down, and we talk about who dies,eh?

The problem with Christians today is that no one wants to kill them anymore.

Action and becoming are one.

It is inconceivable that you would ever see two chimpanzees carrying a log together.

It's better to gather in righteousness than fellowship with darkness.

Objectivity consists in understanding that the only one who never makes a mistake is the one who never does anything.