After the Ten Commandments Jesus Christ added another one - love one another. Tough to argue with that one.
To be honest, "love one another" seems pretty stupid to me. Love is not an act of will. You either love someone or you don't. You can't choose whether you do or not. I think it makes sense to say that people should respect each other's basic rights and treat each other decently. But a "commandment" to love seems nonsensical to me.
