There are two components to natural selection; functional advantage and transfer of functional advantage. Virtue is the greatest organizing principle. As such virtue will always provide functional advantages. So while Darwinism may have no formal moral compass, nature most certainly does. Societies and people which behave with virtue experience order and harmony. Societies and people which behave without virtue experience disorder and chaos. So we can see from the natural outcomes that not all behaviors have equal outcomes. That some behaviors have better outcomes and some behaviors have worse outcomes. This is the moral law at work through the laws of nature..yet Darwin insists the is no moral compass that defines evil and good,