Whatsoever is, is in God, and without God nothing can be, or be conceived.

Self-preservation is the primary and only foundation of virtue.

I should attempt to treat human vice and folly geometrically - the passions of hatred, anger, envy, and so on, considered in themselves, follow from the necessity and efficacy of nature.

This is that human freedom, which all boast that they possess, and which consists solely in the fact, that men are conscious of their own desire, but are ignorant of the causes whereby that desire has been determined.

The less the mind understands and the more things it perceives, the greater its power of feigning is. And the more things it understands, the more that power is diminished.

All happiness or unhappiness solely depends upon the quality of the object to which we are attached by love.

The human Mind cannot be absolutely destroyed with the Body, but something of it remains which is eternal.