Shelly

“By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.”
― Confucious

“The fool doth think he is wise, but the wise man knows himself to be a fool.”
― William Shakespeare, As You Like It

“Whenever you find yourself on the side of the majority, it is time to reform (or pause and reflect).”
― Mark Twain

“Never tell the truth to people who are not worthy of it.”
― Mark Twain