"The happiness of your life depends upon the quality of your thoughts."

"If you are distressed by anything external, the pain is not due to the thing itself, but to your estimate of it; and this you have the power to revoke at any moment."

"What is evil? It is that which you have often seen. And on all occasions, when thou art vexed at anything, remember that it is nothing else than that which thou hast often seen. And generally thou wil…"

"Take away your opinion, and then there is taken away the complaint, 'I have been harmed.' Take away the complaint, 'I have been harmed,' and the harm is taken away."

"Everything that happens is either endurable or not. If it's endurable, then endure it. Stop complaining. If it's not endurable, then stop complaining. Your destruction will mean its end."