Over-production is not possible in all branches of industry at once, but it is possible in some as compared to others. - William Stanley Jevons

There are many portions of economical doctrine which appear to me as scientific in form as they are consonant with facts.

As there are so many who talk prose without knowing it, or, again, who syllogize without having the least idea what a syllogism is, so economists have long been mathematicians without being aware of the fact.

Commerce is but a means to an end, the diffusion of civilization and wealth. To allow commerce to proceed until the source of civilization is weakened and overturned is like killing the goose to get the golden egg. Is the immediate creation of material wealth to be our only object?