Abstract
In my Mind and World I appeal to second nature, which, according to Hans-Peter Kr ger, plays a central role in Plessner's philosophical anthropology. But I think this convergence is less significant than Kr ger suggests.This note differentaties my purpose-to disarm the temptation to think perceptual experience, natural as it is, could not figure in what Sellars called “the space of reasons”-from Plessner's, which is to disarm the temptation to hope for an ahistorical insight into what is properly authoritative over the shape of our lives.