The idea of a Supreme Being who creates a world in which one creature is designed to eat another in order to subsist, and then pass a law saying, "Thou shalt not kill," is so monstrously, immeasurably, bottomlessly absurd that I am at a loss to understand how mankind has entertained or given it house room all this long.
We must love one another, yes, yes, that's all true enough, but nothing says we have to like each other. It may be the very recognition of all men as our brothers that accounts for the sibling rivalry, and even enmity, we have toward so many of them.