"Above all things, respect yourself." —Pythagoras

"Nothing, to my way of thinking, is a better proof of a well ordered mind than a man’s ability to stop just where he is and pass some time in his own company." —Seneca

"Philosophy is an act of living." —Plutarch

"If I followed the multitude, I should not have studied philosophy." —Chrysippus

"In anger we should refrain both from speech and action." —Pythagoras

"The goal of life is living in agreement with Nature." —Zeno

"The greatest obstacle to living is expectancy, which hangs upon tomorrow, and loses today." —Seneca

"Pleasures, when they go beyond a certain limit, are but punishments." —Marcus Aurelius

"Human behavior flows from three main sources: desire, emotion, and knowledge." —Plato

"There is only one way to happiness and that is to cease worrying about things which are beyond the power or our will." —Epictetus

"You will earn the respect of all if you begin by earning the respect of yourself. Don’t expect to encourage good deeds in people conscious of your own misdeeds." —Musonius Rufus

"Man is not worried by real problems so much as by his imagined anxieties about real problems." —Epictetus

"Just that you do the right thing. The rest doesn’t matter." —Marcus Aurelius

"I begin to speak only when I’m certain what I’ll say isn’t better left unsaid." —Cato

"The worst type of man behaves as badly in his waking life as some men do in their dreams." —Plato, The Republic

"The highest good is not to seek to do good but to allow yourself to become it." —Hierocles

"Gratitude is not only the greatest of virtues, but the parent of all others." —Cicero

"He who hesitates is lost." —Cato

"And you can also commit injustice by doing nothing." —Marcus Aurelius

"Six mistakes mankind keeps making century after century: Believing that personal gain is made by crushing others; Worrying about things that cannot be changed or corrected; Insisting that a thing is impossible because we cannot accomplish it; Refusing to set aside trivial preferences; Neglecting development and refinement of the mind; Attempting to compel others to believe and live as we do." —Cicero