Respect yourself if you would have others respect you.
He who laughs at everything is as big a fool as he who weeps at everything.
Don't take the wrong side of an argument just because your opponent has taken the right side.
Know the great men of your age.
Know what is evil, no matter how worshipped it may be. Let the man of sense not mistake it, even when clothed in brocade, or at times crowned in gold, because it cannot thereby hide its hypocrisy, for slavery does not lose its infamy, however noble the master.
All victories breed, and that over your superior is foolish or fatal.