It is remarkable that Providence has given us all things for our advantage near at hand; but iron, gold, and silver, being both the instruments of blood and slaughter and the price of it, nature has hidden in the bowels of the earth.

Shun no toil to make yourself remarkable by some talent or other; yet do not devote yourself to one branch exclusively. Strive to get clear notions about all. Give up no science entirely; for science is but one.

Human affairs are like a chess-game: only those who do not take it seriously can be called good players. Life is like an earthen pot: only when it is shattered, does it manifest its emptiness.

As for old age, embrace and love it. It abounds with pleasure if you know how to use it. The gradually declining years are among the sweetest in a man's life, and I maintain that, even when they have reached the extreme limit, they have their pleasure still.

Be silent as to services you have rendered, but speak of favours you have received.

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.

Levity of behavior is the bane of all that is good and virtuous.