"Nothing exists except atoms and free space, everything else is opinion." —Democritus

"Anyone who can make you angry becomes your master." —Epictetus

"If you want rainbow, you have to deal with the rain." —Augustus

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

"Be indifferent to what makes no difference." —Marcus Aurelius

"The fool’s life is empty of gratitude and full of fears; its course lies wholly toward the future." —Epicurus