This is a fundamental ethical problem. Science and logic can't demonstrate that rape and murder, just to give a couple examples, are wrong. In fact science tell

This is a fundamental ethical problem. Science and logic can't demonstrate that rape and murder, just to give a couple examples, are wrong. In fact science tells us that rape and murder are hunky-dory if they increase biological fitness. Any meaningful system of ethics is characteristically normative, which means it rests on authority; divine authority is the highest form of authority that can be thought of.