Cato the Elder
"An angry man opens his mouth and shuts his eyes."
"Cessation of work is not accompanied by cessation of expenses." - De Agri Cultura
"Those who are serious in ridiculous matters will be ridiculous in serious matters." - quoted in Plutarch's Moralia: Sayings of Kings and Commanders
"I would much rather have men ask why I have no statue, than why I have one." - quoted in Plutarch's Parallel Lives
"Wise men profit more from fools than fools from wise men; for the wise men shun the mistakes of fools, but fools do not imitate the successes of the wise." - quoted in Plutarch's Parallel Lives