Whatever you want to teach, be brief.
Anger is a brief lunacy.
Take subject matter equal to your powers, and ponder long, what your shoulders cannot bear, and what they can.
Avoid inquisitive persons, for they are sure to be gossips, their ears are open to hear, but they will not keep what is entrusted to them.
The same (hated) man will be loved after he's dead. How quickly we forget.
Anger is a momentary madness.