Why not provide some expanation as to what you mean by "common nature shared universally"?
For those not visiting that link, one excerpt reads ...
The man in Drawing Room B, Car No. 4, was a newspaper publisher who believed that men are evil by nature and unfit for freedom, that their basic interests, if left unchecked, are to lie, to rob and to murder one another.
For those interested, there are some uniquely interesting Freeper reviews of Atlas Shrugged at click here.