Now, the causes being four, it is the business of the student of nature to know about them all, and if he refers his problems back to all of them, he will assign the "why" in the way proper to his science-the matter, the form, the mover, that for the sake of which.
When...we, as individuals, obey laws that direct us to behave for the welfare of the community as a whole, we are indirectly helping to promote the pursuit of happiness by our fellow human beings.
One citizen differs from another, but the salvation of the community is the common business of them all. This community is the constitution; the virtue of the citizen must therefore be relative to the constitution of which he is a member.
Now the greatest external good we should assume to be the thing which we offer as a tribute to the gods, and which is most coveted by men of high station, and is the prize awarded for the noblest deeds; and such a thing is honor, for honor is clearly the greatest of external goods.