Happiness is a certain activity of soul in conformity with perfect goodness
What is the essence of life? To serve others and to do good.
One thing alone not even God can do,To make undone whatever hath been done.
Those who act receive the prizes.
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.
These virtues are formed in man by his doing the actions ... The good of man is a working of the soul in the way of excellence in a complete life.