Bad philosophers may have a certain influence; good philosophers, never.

That which exists through itself is called The Eternal. The Eternal has neither name nor shape. It is the one essence, the one primal spirit. Essence and life cannot be seen. They are contained in the light of heaven. The light of heaven cannot be seen. It is contained in the two eyes.

Throughout the long period of religious doubt, I had been rendered very unhappy by the gradual loss of belief, but when the process was completed, I found to my surprise that I was quite glad to be done with the whole subject.

Berkeley retains the merit of having shown that the existence of matter is capable of being denied without absurdity.

The secrets to happiness include enterprise, exploration of one's interests and the overcoming of obstacles.

Never try to discourage thinking, for you are sure to succeed.

But I simply can't stand a view limited to this earth, I feel life is so small unless it has windows into other worlds...I like mathematics largely because it is not human.