"It is from humors in the blood," says she, "you must be purged." But what are these humors, or are there any humors at all?
On this subject she troubles herself but little.

This good old woman comes into my mind, whenever I hear an attempt made to account for all the maladies of the social body, by some trivial form of words.

It is superabundance of produce, tyranny of capital, industrial plethora, or other such nonsense, of which, it would be fortunate if we could say: _Verba et voces praetereaque nihil_, for these are errors from which fatal consequences follow.
From what precedes, the two following results may be deduced: 1st.

That the social sciences, more than others, necessarily abound in _Sophisms_, because in their application, each individual consults only his own judgment and his own instincts.2d.That in these sciences _Sophisms_ are especially injurious, because they mislead opinion on a subject in which opinion is power--is law.
Two kinds of books then are necessary in these sciences, those which teach, and those which circulate; those which expound the truth, and those which combat error.
I believe that the inherent defect of this little work, _repetition_, is what is likely to be the cause of its principal utility.

Among the Sophisms which it has discussed, each has undoubtedly its own formula and tendency, but all have a common root; and this is, the _forgetfulness of the interests of men, considered as consumers_.