4. The necessity of these preparations, bring on the exchange
of productions for labour.
The same motive which has established the exchange of
commodity for commodity, between the cultivators of lands of
different natures, has also necessarily brought on the exchange
of commodities for labour, between the cultivators and another
portion of society, who shall have preferred the occupation of
preparing and completing the productions of the earth, to the
cultivation of it. Every one profits by this arrangement, for
every one attaching himself to a peculiar species of labour,
succeeds much better therein. The husbandman draws from his field
the greatest quantity it is able to produce, and procures to
himself, with greater facility, all the other objects of his
wants, by an exchange of his superflux, than he could have done
by his own labour. The shoemaker, by making shoes for the
husbandman, secures to himself a portion of the harvest of the
latter. Every workman labours for the wants of the workmen of
every other trade, who, on their side, toil also for him.
