We are now in a position to define the happy man as 'one who is active in accordance with complete virtue, and who is adequately furnished with external goods, and that not for some unspecified period but throughout a complete life'. For us it is clear that, from what has been said already, that happiness is one of those things that are precious and perfect. Happiness is a first principle and therefore it is precious and divine . The virtue we must examine is human virtue, since we are also seeking the human good and human happiness. And by human virtue we mean virtue of the soul, not of the body, since we also say that happiness is an activity of the soul.
Happiness is virtue of the soul .
We have said that one part of the soul is non-rational, while one has reason. The distinction between virtues also reflects this difference.