Crows pick out the eyes of the dead, when the dead have no longer need of them; but flatterers mar the soul of the living, and her eyes they blind. – Epictetus
“No school has more goodness and gentleness; none has more love for human beings, nor more attention to the common good. The goal which it assigns to us is to be useful, to help others, and to take care, not only of ourselves, but of everyone in general and of each one in particular.” — Seneca
“You get what you deserve. Instead of being a good person today, you choose instead to become one tomorrow.” —Marcus Aurelius
“It is the power of the mind to be unconquerable.”
These are great and wonderful Stoic principals to keep in mind. You could call them rules but in Stoicism there really are not rules
It is a sin to pursue pleasure as a good and to avoid pain as a evil.
How much better to heal than seek revenge from injury. Vengeance wastes a lot of time and exposes you to many more injuries than the first that sparked it. Anger always outlasts hurt. Best to take the opposite course. — Seneca
“If anyone can refute me—show me I’m making a mistake or looking at things from the wrong perspective—I’ll gladly change. It’s the truth I’m after, and the truth never harmed anyone.” – Marcus Aurelius