"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
"Do not spoil what you have by desiring what you have not." —Epicurus
"Don’t be overheard complaining…not even to yourself." —Marcus Aurelius
"No man is more unhappy than he who never faces adversity. For he is not permitted to prove himself." —Seneca
"To move the world, we must first move ourselves." —Socrates
"Quality is not an act, it is a habit." —Aristotle
"Rather fail with honor than succeed by fraud." —Sophocles
"In your actions, don’t procrastinate. In your conversations, don’t confuse. In your thoughts, don’t wander. In your soul, don’t be passive or aggressive. In your life, don’t be all about business." —Marcus Aurelius
"He who conquers his passions is master of his own worlds." —Hierocles
"Talk sense to a fool and he calls you foolish." —Euripides
"A gift consists not in what is done or given, but in the intention of the giver or doer." —Seneca
"Let your speech be better than silence, or be silent." —Dionysius
"A room without books is like a body without a soul." —Cicero
"The whole future lies in uncertainty: live immediately." —Seneca
"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
"A fool is known by his speech; and a wise man by silence." —Pythagoras
"Glory follows virtue as if it were its shadow." —Cicero
"The essence of philosophy is that a man should so live that his happiness shall depend as little as possible on external things." —Epictetus
"A gift consists not in what is done or given, but in the intention of the giver or doer." —Seneca
"Nature does nothing uselessly." —Aristotle
