There is only one condition in which we can imagine managers not needing subordinates, and masters not needing slaves. This condition would be that each (inanimate) instrument could do its own work.

It is our choice of good or evil that determines our character, not our opinion about good or evil.

It is clear that those constitutions which aim at the common good are right, as being in accord with absolute justice; while those which aim only at the good of the rulers are wrong.

A body in motion can maintain this motion only if it remains in contact with a mover.

Dignity does not consist in possessing honors, but in deserving them.

Obstinate people can be divided into the opinionated, the ignorant, and the boorish.

Although it may be difficult in theory to know what is just and equal, the practical difficulty of inducing those to forbear who can, if they like, encroach, is far greater, for the weaker are always asking for equality and justice, but the stronger care for none of these things.