I'll take the contrary position to Yarvin here. Measuring intelligence and athleticism are both good proxies for "spiritual worth" within a given group. This only fails totally when you mix groups that were selected for the traits in question - Goodhart's law. https://twitter.com/Indian_Bronson/status/1273580795794526210 …
He's not wrong in the context of a multiethnic empire but it's not because the Greeks were *stupid* to consider sprinting speed. I'm sure he in particular would understand that as well as anyone.