Stoic Quotes

Epictetus:
"Man is disturbed not by things, but by the views he takes of them."
"If, therefore, any be unhappy, let him remember that he is unhappy by reason of himself alone."
"No man is free who is not master of himself."

Marcus Aurelius
"If you are distressed by any external thing, it is not this thing which disturbs you, but your own judgment about it. And it is in your power to wipe out that judgment now."
"It is in our power to refrain from any opinion about things and not to be disturbed in our souls; for things in themselves have no natural power to force our judgments."
"Everywhere and at all times it is in your power to accept reverently your present condition, to behave justly to those about you, and to exert your skill to control your thoughts, that nothing shall steal into them without being well examined."

Seneca
"The soul should know whither it is going and whence it came, what is good for it and what is evil, what it seeks and what it avoids, and what is that Reason which distinguishes between the desirable and the undesirable, and thereby tames the madness of our desires and calms the violence of our fears."