"The power of the mind over the emotions consists in reason."

"The more a thing has perfection, the more it acts, and the less it suffers."

"The human mind has no free will, but is determined to will this or that by a cause which is also determined by another cause, and this again by another, and so on to infinity."

"The greatest good is the knowledge of the union which the mind has with the whole of nature."

"Blessedness is not the reward of virtue, but virtue itself."