Do thine own work, and know thyself.

False words are not only evil in themselves, but they infect the soul with evil.

Democracy leads to anarchy, which is mob rule.

For it is obvious to everybody, I think, that this study [of astronomy] compels the soul to look upward and leads it away from things here to higher things.

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

Never discourage anyone who continually makes progress, no matter how slow... even if that someone is yourself!

The greatest mistake physicians make is that they attempt to cure the body without attempting to cure the mind, yet the mind and the body are one and should not be treated separately!