Oh, a friend! How true is that old saying, that the enjoyment of one is sweeter and more necessary than that of the elements of water and fire!

Arts and sciences are not cast in a mould, but are found and perfected by degrees, by often handling and polishing.

We are nearer neighbors to ourselves than the whiteness of snow or the weight of stones are to us: if man does not know himself, how should he know his functions and powers?

How many valiant men we have seen to survive their own reputation!

Difficulty is a coin the learned make use of like jugglers, to conceal the inanity of their art.

My trade and art is to live.

I put forward formless and unresolved notions, as do those who publish doubtful questions to debate in the schools, not to establish the truth but to seek it.