Art completes what nature cannot bring to finish. The artist gives us knowledge of nature's unrealized ends.

We must be neither cowardly nor rash but courageous.

Even if you must have regard to wealth, in order to secure leisure, yet it is surely a bad thing that the greatest offices, such as those of kings and generals, should be bought. The law which allows this abuse makes wealth of more account than virtue, and the whole state becomes avaricious.

One kind of justice is that which is manifested in distributions of honour or money or the other things that fall to be divided among those who have a share in the constitution ... and another kind is that which plays a rectifying part in transactions.

A body in motion can maintain this motion only if it remains in contact with a mover.

Anaximenes and Anaxagoras and Democritus say that its [the earth's] flatness is responsible for it staying still: for it does not cut the air beneath but covers it like a lid, which flat bodies evidently do: for they are hard to move even for the winds, on account of their resistance.

Great and frequent reverses can crush and mar our bliss both by the pain they cause and by the hindrance they offer to many activities. Yet nevertheless even in adversity nobility shines through, when a man endures repeated and severe misfortune with patience, not owing to insensibility but from generosity and greatness of soul.