Knowledge which is acquired under compulsion obtains no hold on the mind.

A drunkard is unprofitable for any kind of good service.

Education is the constraining and directing of youth towards that right reason, which the law affirms, and which the experience of the best of our elders has agreed to be truly right.

The philosopher whose dealings are with divine order himself acquires the characteristics of order and divinity.

As the government is, such will be the man.

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.

He who can properly define and divide is to be considered a god.