Some things don't have price

"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." ~Thomas Jefferson (1813)

"Se há uma coisa que a natureza fez que é menos suscetível que todas as outras de propriedade exclusiva, esta coisa é a ação do poder de pensamento que chamamos de idéia... Que as idéias devam se expandir livremente de uma pessoa para outra, por todo o globo, para a instrução moral e mútua do homem, e o avanço de sua condição, parece ter sido particularmente e benevolmente desenhado pela natureza, quando ela as tornou, como o fogo, passíveis de expansão por todo o espaço, sem reduzir a sua densidade em nenhum ponto, e como o ar no qual respiramos, nos movemos e existimos fisicamente, incapazes de confinamento, ou de apropriação exclusiva. Invenções não podem, por natureza, ser objeto de propriedade." ~Thomas Jefferson (1813)

Cited by Lawrence Lessig, The Future of Ideas: the Fate of the Commons in an Connected World – Random House, New York, 2001, p. 94