I think I may say, that of all the men we meet with, nine parts of ten are what they are, good or evil, useful or not, by their education

The only fence against the world is a thorough knowledge of it.

The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.

It is one thing to show a man that he is in an error, and another to put him in possession of the truth.