"You may fetter my leg, but Zeus himself cannot get the better of my free will."

"What does not transmit light creates darkness."

"For desire, suspend it completely for now. Because if you desire something outside your control, you are bound to be disappointed; and even things we do control, which under other circumstances would …"

"It is our attitude toward events, not events themselves, which determines how we will act."

"It is better to starve to death in freedom from grief and fear, than to live in plenty with perturbation."