...The body is affected by the image of the thing, in the same way as if the thing were actually present.

Human infirmity in moderating and checking the emotions I name bondage : for, when a man is a prey to his emotions, he is not his own master, but lies at the mercy of fortune : so much so, that he is often compelled, while seeing that which is better for him, to follow that which is worse.

Peace is not the absence of war, but a virtue based on strength of character.

No matter how thin you slice it, there will always be two sides.

Yet nature cannot be contravened, but preserves a fixed and immutable order.

As men's habits of mind differ, so that some more readily embrace one form of faith, some another, for what moves one to pray may move another to scoff, I conclude ... that everyone should be free to choose for himself the foundations of his creed, and that faith should be judged only by its fruits.

I do not know how to teach philosophy without becoming a disturber of established religion.