We become just by the practice of just actions.
In the works of Nature, purpose, not accident, is the main thing.
If happiness, then, is activity expressing virtue, it is reasonable for it to express the supreme virtue, which will be the virtueof the best thing.
There is nothing unequal as the equal treatment of unequals.
And this lies in the nature of things: What people are potentially is revealed in actuality by what they produce.
Our feelings towards our friends reflect our feelings towards ourselves.