If all but myself were blind, I should want neither a fine house nor fine furniture.

To be proud of knowledge is to be blind with light.

A friend in need is a friend indeed!

If anyone should doubt whether the electrical matter passes through the substance of bodies, or only over along their surfaces, a shock from an electrified large glass jar, taken through his own body, will probably convince him.

That as we enjoy great advantages from the inventions of others, we should be glad of an opportunity to serve others by any invention of ours, and this we should do freely and generously.

By playing at Chess then, we may learn... First: Foresight. Second: Circumspection. Third: Caution.

Nothing is more fatal to health than an over care of it.