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

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

Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.

We should have a great fewer disputes in the world if words were taken for what they are, the signs of our ideas only, and not for things themselves.

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

No man's knowledge here can go beyond his experience.