Mankind will never see an end of trouble until lovers of wisdom come to hold political power, or the holders of power become lovers of wisdom

Geometry draws the soul towards truth.

To be curious about that which is not one's concern while still in ignorance of oneself is ridiculous.

... the good are not willing to rule either for the sake of money or of honor.

Man is a biped without feathers.

For this feeling of wonder shows that you are a philosopher, since wonder is the only beginning of philosophy.

Justice in the individual is now defined analogously to justice in the state. The individual is wise and brave in virtue of his reason and spirit respectively: he is disciplined when spirit and appetite are in proper subordination to reason. He is just in virtue of the harmony which exists when all three elements of the mind perform their proper function and so achieve their proper fulfillment; he is unjust when no such harmony exists.