[fecklessyouth]

I don't mean "nature" as an explanation for action, as in your second line, but as a guide for it. The context in the article uses it in the guiding sense. My point is that the article uses "nature" in a very short-sighted and artificial sense. I do think that discussion of "nature" can be part of a broader teleology for human action, but that's obviously not what the author is attempted.