Full Idea
Hegel argued that it was the impossibility of a naturalistic account of normativity that distinguished Geist from nature, not Geist's being any kind of metaphysical substance.
Clarification
'normativity' is creating rules; 'Geist' is human spirit in general
Gist of Idea
Geist is distinct from nature, not as a substance, but because of its normativity
Source
report of Georg W.F.Hegel (Philosophy of Mind (Encylopedia III) [1817]) by Terry Pinkard - German Philosophy 1760-1860 11
Book Reference
Pinkard,Terry: 'German Philosophy 1760-1860' [CUP 2002], p.278
A Reaction
Hegel always seems to want to have his cake and eat it. Without a mental substance, how can Geist not be part of nature? What is Geist made of? Is his view functionalist? But that is usually naturalistic. Is normativity magic?