Look not every man on his own things, but every man also on the things of others.
Read Chapter 2
Gaius Marius Victorinus
AD 400
If we think only of ourselves, we may act for our own benefit and bother only with our own affairs, our hope, our own deliverance. But this is not enough. We are truly acting for ourselves if we also have a concern for others and strive to be of benefit to them. For since we are all one body, we look out for ourselves when we look out for others.
The things that are his. Self-love and self-interest are the two great sources of divisions. The Christian religion teaches a contrary doctrine. (Calmet)