A very populous city can rarely, if ever, be well governed.

It is the active exercise of our faculties in conformity with virtue that causes happiness, and the opposite activities its opposite.

...in this way the structure of the universe- I mean, of the heavens and the earth and the whole world- was arranged by one harmony through the blending of the most opposite principles.

Love well, be loved and do something of value.

[the virtues] cannot exist without Prudence. A proof of this is that everyone, even at the present day, in defining Virtue, after saying what disposition it is [i.e. moral virtue] and specifying the things with which it is concerned, adds that it is a disposition determined by the right principle; and the right principle is the principle determined by Prudence.

In poverty and other misfortunes of life, true friends are a sure refuge.

Think as the wise men think, but talk like the simple people do.