It never was in the power of any man or any community to call the arts into being. They come to serve his actual wants, never to please his fancy.

No one can read the history of astronomy without perceiving that Copernicus, Newton, Laplace, are not new men, or a new kind of men, but that Thales, Anaximenes, Hipparchus, Empodocles, Aristorchus, Pythagorus, Oenipodes, had anticipated them.

Stay at home in your mind. Don't recite other people's opinions.

I give you joy of your free and brave thought. I have great joy in it. I find incomparable things said incomparably well, as they must be. I find the courage of treatment which so delights us, and which large perception only can inspire.

The philosophy of waiting is sustained by all the oracles of the universe.

It behooves us to be careful what we worship, for what we are worshipping we are becoming.

There is a crack in everything God has made