The sum of wisdom is that time is never lost that is devoted to work.

In America the geography is sublime, but the men are not; the inventions are excellent, but the inventors one is sometimes ashamed of.

I have no expectation that any man will read history aright who thinks that what was done in a remote age, by men whose names have resounded far, has any deeper sense than what he is doing today.

Truly speaking, it is not instruction, but provocation, that I can receive from another soul. What he announces, I must find true in me, or reject; and on his word, or as his second, be he who he may, I can accept nothing.

Children are all foreigners.

Only so much of life do I know as I have lived.

We do not yet trust the unknown power of thoughts.