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!

Don't quarrel with your parents even if you are on the right.

I do not think it is permitted that a better man be harmed by a worse.

Until philosophers rule as kings or those who are now called kings and leading men genuinely and adequately philosophise, that is, until political power and philosophy entirely coincide, while the many natures who at present pursue either one exclusively are forcibly prevented from doing so, cities will have no rest from evils,... nor, I think, will the human race.

Serious things cannot be understood without laughable things, nor opposites at all without opposites.

And what do you say of lovers of wine... they are glad of any pretext of drinking any wine

Ignorance: the root of all evil.