From what has been said we can clearly understand the nature of Love and Hate. Love is nothing else but pleasure accompanied by the idea of an external cause: Hate is nothing else but pain accompanied by the idea of an external cause. We further see, that he who loves necessarily endeavors to have, and to keep present to him, the object of his love; while he who hates endeavors to remove and destroy the object of his hatred.

Whatsoever is contrary to nature is contrary to reason, and whatsoever is contrary to reason is absurd.

Things could not have been brought into being by God in any manner or in any order different from that which has in fact obtained.

Desire is the very essence of man

The order and connection of ideas is the same as the order and connection of things.

The more clearly you understand yourself and your emotions, the more you become a lover of what is.

Surely human affairs would be far happier if the power in men to be silent were the same as that to speak.