Arthur Latham Perry,
Principles of Political Economy
“ It is important for our purposes to discriminate carefully the three kinds of Utility: (1) what is wholly disconnected from the efforts of men, and comes freely from the hand of God; (2) what is mingled with the unpaid efforts of men, so that the satisfaction of the desire comes partly from Nature and partly from unbought effort; and (3) the compound utility that is partly free gift and partly the result of compensated labor. The last is the only kind of Utility that stands in any connection with Value. ”
