Developing nations want to become developed nations.

Of all religions, the Christian should of course inspire the most tolerance, but until now Christians have been the most intolerant of all men.

If any philosopher had been asked for a definition of infinity, he might have produced some unintelligible rigmarole, but he would certainly not have been able to give a definition that had any meaning at all.

We cannot command Nature except by obeying her.

To want friendship is a great fault. Friendship ought to be a gratuitous joy, like the joys afforded by art or life.