On Loving Your Neighbor:

"But what can we do," you say, "to obtain the enjoyment of life?" Listen to the Judge Himself conversing with a certain young man on the subject. When the latter asked: "What shall I do to obtain eternal life?" Christ after mentioning to him the other commandments, ended with the love of his neighbor. And perhaps some of my listeners, like that rich young man, will say: "We also have kept these, for we have not stolen, we have not committed murder, we have not committed adultery." However, you will not be able to say this, also: that you have loved your neighbor as you ought. For, if a man has been envious, or has spoken slander, or has not helped one who wronged him, or has not shared his possessions, he has not loved his neighbor.


Saint John Chrysostom