There is a great difference between mind and body insomuch as body is by nature always divisible, and the mind is entirely indivisible.

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?

Success does not come to a person’s life by chance you have to fight for it

I never encountered any crisis in life, because I solved my problems before they turned into crisis.

If you require force to promote your ideal, there is something wrong with your ideal.

I not only believe, I believe that there are many different species of ships, there are many different species of extraterrestrials, and not all of them are up to good.

When people begin to talk about "our island story" my hackles rise. It is deluded and conservative.

All the flower children were as alike as a congress of accountants and about as interesting.

To mistake money for wealth, is the same sort of error as to mistake the highway which may be the easiest way of getting to your house or lands, for the house and lands themselves.

Being conservative has never been regarded as old-fashioned. But if you fight for a sensible step in the right direction which others has deserted you will be branded "reactionary".

It is no more rational to have lawyers in positions of power than it would be to have garbage collectors in positions of power. And in human terms garbage collectors would be preferable.

Life is a test and this world a place of trial.