"Don't put a god's image on a ring."

"There is geometry in the humming of the strings."

"Do not go to bed until you have gone over the day three times in your mind. What did I do wrong? What did I do right? What did I leave undone?"

"Don't piss towards the sun."

"Choose always the way that seems the best, however rough it may be; custom will soon render it easy and agreeable."