" In a world without God, who’s to say whose values are right and whose are wrong? There can be no objective right and wrong, only our culturally and personally relative, subjective judgments. Think of what that means! It means it’s impossible to condemn war, oppression, or crime as evil. Nor can you praise generosity, self-sacrifice, and love as good. To kill someone or to love someone is morally equivalent. For in a universe without God, good and evil do not exist—there is only the bare, valueless fact of existence, and there is no one to say you are right and I am wrong. "

― William Lane Craig , On Guard: Defending Your Faith with Reason and Precision