"Except our own thoughts, there is nothing absolutely in our power." —Descartes

"As long as you live, keep learning how to live." —Seneca

"Kindness is unconquerable, so long as it is without flattery or hypocrisy. For what can the most insolent man do to you, if you contrive to be kind to him, and if you have the chance gently advise and calmly show him what is right…and point this out tactfully and from a universal perspective." —Marcus Aurelius

"Confine yourself to the present." —Marcus Aurelius

"People who labor all their lives but have no purpose to direct every thought and impulse toward are wasting their time-even when hard at work." —Marcus Aurelius

"Deaths that are greater, greater portions gain." —Heraclitus

"A fool is known by his speech; and a wise man by silence." —Pythagoras

"The essence of philosophy is that a man should so live that his happiness shall depend as little as possible on external things." —Epictetus