They offer me neither food nor drink - intellectual nor spiritual consolation... [Conservatism] leads nowhere; it satisfies no ideal; it conforms to no intellectual standard, it is not safe, or calculated to preserve from the spoilers that degree of civilization which we have already attained.

The difficulty lies, not in the new ideas, but in escaping from the old ones.

Newton was not the first of the age of reason. He was the last of the magicians, the last of the Babylonians and Sumerians, the last great mind that looked out on the visible and intellectual world with the same eyes as those who began to build our intellectual inheritance rather less than 10,000 years ago.

I believe myself to be writing a book on economic theory which will largely revolutionize - not, I suppose, at once but in the course of the next ten years - the way the world thinks about economic problems.

If human nature felt no temptation to take a chance there might not be much investment merely as a result of cold calculation.

Well, when I get new information, I rethink my position. What, sir, do you do with new information?

Newton was a judaic monotheist of the school of Maimonides