He is attacking extreme relativists who claim all morals are based on culture and culture alone The fact that all human cultures have notions that can be descr

He is attacking extreme relativists who claim all morals are based on culture and culture alone The fact that all human cultures have notions that can be described as morals, that are biological in nature and connected to physical sensations (disgust, anger, etc) presupposes a universal system. That universal system can’t be completely siloed from affecting the morals themselves. By virtue of having the same biological underlining there should be some connecting thread between all human morals