NMC - That question has been the source of good debates.
LiberationIT oughta just own to the the truth: he wasn't up to the challenge. He can not name nor can he defend the source of his rights; he can only proclaim what those rights are, as Fulton Huxtable has done, as though the proclamation itself gives logical defense of the rights of man.
The fact that man is capable of reasoning and of rational self interest is inadequate to explain natural rights?
Regards
J.R.