Epictetus

"Uncertainty is the natural state of the wise; certainty is the refuge of fools."

"Your flesh belongs to the universe; your will belongs only to you."

"Every obstacle you encounter is an opportunity to practice virtue."

"The highest knowledge is understanding what is beyond your control."

"Just as the actor does not choose their role but must play it well, so too must you accept your role in life."

"True education is learning to want what you already have."

"You cannot put a bridle on your thoughts, only on your actions and desires."

"The person who conquers themself is greater than one who conquers a city."

"In every difficulty, remember: this is an opportunity to show your character."

"Wealth is relative; a wealthy person who desires more is poorer than a pauper who is satisfied."

"The most difficult imprisonment is one we create through our own opinions."

"You will be able to do justice to Minerva when you have learned from Epictetus."

"The first sign of progress is acceptance of what is."

"Do not look for peace in external silence, but in the silence of your tumultuous mind."

"As one becomes sober, one begins to understand that much of life was an illusion."

"The measure of a person is what they do with power."

"Death is nothing fearful; a fearful death comes only from a fearful mind."

"Every person is responsible for the inheritance they leave in the world."

"You are a little piece of soul carrying around a corpse."

"The greater the difficulty, the greater the opportunity to show courage."

"Attachment is the root of suffering; acceptance is the root of peace."

"You possess within you a strength that increases with every challenge you overcome."

"To enjoy good health, give your mind less work and your body more exercise."

"The universe is a single living organism of which you are a part."

"Asking for money is not a virtue, nor is giving it—only how you handle it matters."

"The person who acts on principle, not appetite, is truly free."

"Memory of past failures is the greatest teacher of future success."

"In your pursuit of happiness, do not neglect the cultivation of virtue."

"The fool blames others for his misfortune; the wise person examines their own judgments."

"Life is not about what happens to you, but about how you respond."