The sweetest things become the most bitter by excess.

The wrongdoer is more unfortunate than the man wronged.

Reason is often a more powerful persuader than gold.

There are innumerable worlds of different sizes. In some there is neither sun not moon, in others they are larger than in ours and others have more than one. These worlds are at irregular distances, more in one direction and less in another, and some are flourishing, others declining. Here they come into being, there they die, and they are distroyed by collision with one another. Some of the worlds have no animal or vegetable life nor any water.

Beautiful objects are wrought by study through effort, but ugly things are reaped automatically without toil.

Nature and education are somewhat similar. The latter transforms man, and in so doing creates a second nature.

The brave man is not only he who overcomes the enemy, but he who is stronger than pleasures.