The most important part of education is proper training in the nursery.

He is unworthy of the name of man who is ignorant of the fact that the diagonal of a square is incommensurable with its side.

The tyranny imposed on the soul by anger, or fear, or lust, or pain, or envy, or desire, I generally call 'injustice.'

It is through geometry that one purifies the eye of the soul.

People regard the same things, some as just and others as unjust, - about these they dispute; and so there arise wars and fightings among them.

Remember how in that communion only, beholding beauty with the eye of the mind, he will be enabled to bring forth, not images of beauty, but realities (for he has hold not of an image but of a reality), and bringing forth and nourishing true virtue to become the friend of God and be immortal, if mortal man may.

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.