Man, an animal that makes bargains.

A nation is not made wealthy by the childish accumulation of shiny metals, but it enriched by the economic prosperity of it's people.

Secrets in manufactures are capable of being longer kept than secrets in trade.

I have no faith in political arithmetic.

The machines that are first invented to perform any particular movement are always the most complex, and succeeding artists generally discover that, with fewer wheels, with fewer principles of motion, than had originally been employed, the same effects may be more easily produced. The first systems, in the same manner, are always the most complex.

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.

This is one of those cases in which the imagination is baffled by the facts.