Man is an animal that makes bargains: no other animal does this - no dog exchanges bones with another.
Man, an animal that makes bargains.
The propensity to truck, barter and exchange one thing for another is common to all men, and to be found in no other race of animals.
Men, like animals, naturally multiply in proportion to the means of their subsistence.
In every part of the universe we observe means adjusted with the nicest artifice to the ends which they are intended to produce; and in the mechanism of a plant, or animal body, admire how every thing is contrived for advancing the two great purposes of nature, the support of the individual, and the propagation of the species.
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