he who recieves an idea from me, recieves instruction himself, without lessening mine; as he who lights his taper at mine, recieves 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 benvolently 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. society may give an exclusive right to the profits arising from them as an encouragement to men to pursue ideas which may produce utility. but this may, or may not be done, according to the will and convenience of the society, without claim or complaint from any body