Anger is short-lived madness.
Choose a subject equal to your abilities; think carefully what your shoulders may refuse, and what they are capable of bearing.
Mingle some brief folly with wisdom now: To be foolish is sweet at times.
No master can make me swear blind obedience.
To teach is to delight.
Let not a god interfere unless where a god's assistance is necessary. [Adopt extreme measures only in extreme cases.]