Moral conduct in the absence of commandments.
“Thou shalt love puppies.”
Does the above Commandment explain why people dutifully gravitate to homeless puppies, adopt them, feed them and love them? Of course not, because there is no such commandment. Nor are there any other abstract moral principles requiring us to love puppies. We love puppies because the urge to love small tame animals is deep in our bones. We love puppies because we are built to love (contrary to those who claim that life is fundamentally dog-eat-dog -- Consider also, that the “struggle for existence” is only a conceptual metaphor with limited application). Our human bodies are pre-rigged to take care of cute little mammals, especially when they appear to love us back. We would love puppies even if there were a commandment telling us to NOT love puppies.