We are concerned in public affairs, but immersed in our private ones.

The study of error is not only in the highest degree prophylactic, but it serves as a stimulating introduction to the study of truth.

Industry is a better horse to ride than genius.

We forge gradually our greatest instrument for understanding the world - introspection. We discover that humanity may resemble us very considerably - that the best way of knowing the inwardness of our neighbors is to know ourselves.

The radical novelty of modern science lies precisely in the rejection of the belief... that the forces which move the stars and atoms are contingent upon the preferences of the human heart.

Most men, after a little freedom, have preferred authority with the consoling assurances and the economy of effort it brings.

Here lay the political genius of Franklin Roosevelt: that in his own time he knew what were the questions that had to be answered, even though he himself did not always find the full answer.