> How people ought to live, is commonly built up from principles and axioms inspired by natural law. You have it backwards. Belief in natural laws is an axiom.

> How people ought to live, is commonly built up from principles and axioms inspired by natural law. You have it backwards. Belief in natural laws is an axiom. Hardly anyone actually chooses their axioms. They're either handed to us, or expressions of innate personality in most cases. People generally decide what they think feels right, then reason backwards from there to conjure up a set of principles that they claim to live by.