The young man must store up, the old man must use.

That day which you fear as being the end of all things is the birthday of your eternity.

Ponder for a long time whether you shall admit a given person to your friendship; but when you have decided to admit him, welcome him with all your heart and soul. Speak as boldly with him as with yourself.

It's the admirer and the watcher who provoke us to all the inanities we commit.

If you will fear nothing, think that all things are to be feared.

Happy is the man who can endure the highest and lowest fortune. He who has endured such vicissitudes with equanimity has deprived misfortune of its power.

It is one thing to remember, another to know. To remember is to safeguard something entrusted to the memory. But to know is to make each thing one's own, not depend on the text and always to look back to the teacher. "Zeno said this, Cleanthes said this." Let there be space between you and the book.