Nicomathean Ethics

            Aristotle writes that the life of study is more self-sufficient than any other kind of life (1177a). In what way is this type of life self-sufficient? If people who live the life of study need others very little, how do they fit in and contribute to communities held together by mutual need (Book V, Chapter V, Section XIII)?.
             Moreover, the self-sufficiency we spoke of will be found in study more than in anything else. For admittedly he wise person, the just person, and the other virtuous people all need the good things necessary for life. Still, when these are adequately supplied, the just person needs other people as partners and recipients of his just actions; and the same is true of the temperate person, the brave person, and each of the others. But wise person is able, and more able the wiser he is, to study even by himself; and though presumably does it better with colleague, even so he is more-self sufficient than any other [virtuous person].
             Now clearly need holds [a community] together as a single unit, since people with no need of each other, both of them or either one, do not exchange, as they exchange whenever another requires what one has oneself, such as wine, when they allow the export of corn. This then must be equalized. Aristotle explains that the life of study is more self-sufficient than any other kind of life. We don't need any colleague in order to do it. For justice person, he or she needs at least one person to be justified; otherwise, he couldn't perform his justice to others. Aristotle agrees that we can be self-sufficient, but we still need something virtuous for our lives. That's because happiness is from the right activities in accord with virtue. For example, .
             Even thought, the person who can live independently because of self-sufficient, he still contribute his self-sufficient to the society. That's because another party need his self-sufficient to live their lives being wise or virtuous.