Of mankind in general, the parts are greater than the whole.

Jealousy is both reasonable and belongs to reasonable men, while envy is base and belongs to the base, for the one makes himself get good things by jealousy, while the other does not allow his neighbour to have them through envy.

The high-minded man does not bear grudges, for it is not the mark of a great soul to remember injuries, but to forget them.

As the pleasures of the body are the ones which we most often meet with, and as all men are capable of these, these have usurped the family title; and some men think these are the only pleasures that exist, because they are the only ones which they know.

Some men are just as sure of the truth of their opinions as are others of what they know.

Demonstration is also something necessary, because a demonstration cannot go otherwise than it does, ... And the cause of this lies with the primary premises/principles.

Poverty is the parent of revolution and crime.