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

Whatever increases, decreases, limits or extends the body's power of action, increases decreases, limits, or extends the mind's power of action. And whatever increases, decreases, limits, or extends the mind's power of action, also increases, decreases, limits, or extends the body's power of action.

He who loves God cannot endeavor that God should love him in return.

Men believe themselves to be free, simply because they are conscious of their actions, and unconscious of the causes whereby those actions are determined.

It is sure that those are most desirous of honour or glory who cry out loudest of its abuse and the vanity of the world.

The greater emotion with which we conceive a loved object to be affected toward us, the greater will be our complacency.

Those who wish to seek out the cause of miracles and to understand the things of nature as philosophers, and not to stare at them in astonishment like fools, are soon considered heretical and impious, and proclaimed as such by those whom the mob adores as the interpreters of nature and the gods.