Now by self-sufficient we do not mean that which is sufficient for a man by himself, for one who lives a solitary life, but also for parents, children, wife, and in general for his friends and fellow citizens, since man is born for citizenship.

• 由幸福是自足这一点可以得出同样的结论，因为最终的目的被认为是自足的，自足的意思并非要一个人独处，要他过离群索居的生活，这一目的同样适用于父母、子女、妻子，一般而言适用于其朋友和国人，因为人生而为城邦公民。