Politicians also have no leisure, because they are always aiming at something beyond political life itself, power and glory, or happiness.

Teenagers these days are out of control. They eat like pigs, they are disrespectful of adults, they interrupt and contradict their parents, and they terrorize their teachers.

Friendship is two souls inhabiting one body.

The most perfect political community must be amongst those who are in the middle rank, and those states are best instituted wherein these are a larger and more respectable part, if possible, than both the other; or, if that cannot be, at least than either of them separate.

The energy or active exercise of the mind constitutes life.

Happiness lies in virtuous activity, and perfect happiness lies in the best activity, which is contemplative

For as the eyes of bats are to the blaze of day, so is the reason in our soul to the things which are by nature most evident of all.