Your days are numbered. Use them to throw open the windows of your soul to the sun. If you do not, the sun will soon set, and you with it.
Which is recorded of Socrates, that he was able both to abstain from, and to enjoy, those things which many are too weak to abstain from, and cannot enjoy without excess. But to be strong enough both to bear the one and to be sober in the other is the mark of a man who has a perfect and invincible soul.
Give up your thirst for books, so that you do not die a grouch.
The world is maintained by change—in the elements and in the things they compose.
Don't go on discussing what a good person should be. Just be one.
Everything that happens, happens as it should, and if you observe carefully, you will find this to be so.