Misanthropy ariseth from a man trusting another without having sufficient knowledge of his character, and, thinking him to be truthful, sincere, and honourable, finds a little afterwards that he is wicked, faithless, and then he meets with another of the same character. When a man experiences this often, and more particularly from those whom he considered his most dear and best friends, at last, having frequently made a slip, he hates the whole world, and thinks that there is nothing sound at all in any of them.

I must yield to you, for you are irresistible.

Mathematics is like draughts in being suitable for the young, not too difficult, amusing, and without peril to the state.

The greatest wealth is to live content with little.

The direction in which education starts a man will determine his future life.

Avoid compulsion and let early education be a matter of amusement. Young children learn by games; compulsory education cannot remain in the soul.

A sensible man will remember that the eyes may be confused in two ways - by a change from light to darkness or from darkness to light; and he will recognize that the same thing happens to the soul.