or An Essay on the Right of Authors and Inventors to a Perpetual Property in their IdeasSECTION IV. Objection Fourth. It is said that ideas have no ear-marks, by which their ownership may be known. And hence it has been inferred that ideas cannot be subjects of ownership; though it would doubtless puzzle any one to show any connection between the premises and the conclusion. This objection is as frivolous as the others; for neither has corporeal property usually, if ever, any ear-marks by which the world at large can know who is the owner. Nevertheless, when mankind see corporeal wealth, as a horse, a house, or a farm, for example, which bears evidence of human labor, and which has too much market value to justify the idea that the owner would voluntarily abandon it, they infer that it has an owner, though he may be at the time unknown to them. So it should be with an idea. When a man has communicated to him an idea, or a device, that he never knew before,—as that...