If nature has made any one thing less susceptible than all others of exclusive property, it is the action of the thinking power called an idea, which an individual may exclusively possess as long as he keeps it to himself; but the moment it is divulged, it forces itself into the possession of every one, and the receiver cannot dispossess himself of it. Its peculiar character, too, is that no one possesses the less, because every other possesses the whole of it. He who receives an idea from me, receives instruction himself without lessening mine; as he who lights his taper at mine, receives light without darkening me. That ideas should freely spread from one to another over the globe, for the moral and mutual instruction of man, and improvement of his condition, seems to have been peculiarly and benevolently designed by nature, when she made them, like fire, expansible over all space, without lessening their density in any point, and like the air in which we breathe, move, and have our physical being, incapable of confinement or exclusive appropriation. Inventions then cannot, in nature, be a subject of property.
[Humans] have been genetically programmed through hunting behavior: cooperation and sharing. Cooperation between members of the same band was a practical necessity for most hunting societies; so was the sharing of food. Since meat is perishable in most climates except that of the Arctic, it could not be preserved. Luck in hunting was not equally divided among all hunters; hence the practical outcome was that those who had luck today would share their food with those who would be lucky tomorrow. Assuming hunting behavior led to genetic changes, the conclusion would be that modern man has an innate impulse for cooperation and sharing, rather than for killing and cruelty."The Anatomy of Human Destructiveness"