The greatest penalty of evil-doing is to grow into the likeness of a bad man.
A wise ignorance is an essential part of knowledge.
Necessity is literally the mother of invention.
They ought to be gentle to their friends and dangerous to their enemies.
Violent pleasures which reach the soul through the body are generally of this sort-they are reliefs of pain.
Excess generally causes reaction, and produces a change in the opposite direction, whether it be in the seasons, or in individuals, or in governments.