Full Idea
Only since Hegel have philosophers begun toying with the idea that the individual apart from his society is just one more animal.
Gist of Idea
Since Hegel we have tended to see a human as merely animal if it is outside a society
Source
Richard Rorty (Philosophy and the Mirror of Nature [1980], 4.3)
Book Reference
Rorty,Richard: 'Philosophy and the Mirror of Nature' [Blackwell 1980], p.192