It's about time someone started paying attention to the man who knew what evil isn't:
Man, St. Augustine wrote, "is a great abyss," and "the moods and
attractions of his heart far outnumber the hairs of his head." If there
is evil in him, it is because he is insufficient in goodness, for evil
"does not exist of itself." "True holiness," or goodness, "is an
interior disposition," an inward awakening to the reality of where God
resides in the heart of man. A man awakened to his inner reality could
do no evil--for instance, be a terrorist--since, filled with goodness,
there would be no evil in him.
If you substitute the word Love for God, there's no reason this injunction could not work as well for a nonbeliever as for a believer. From an article by Salim Mansur in the Western Standard (requires registration), discovered and quoted at length by the redoubtable Diana.