"You would be surprised," said he, "to find how successful
they have been in investing their craft with the forms and trappings of
science, the parade of classification, and the mystery imparted by
technical terms. By these means they have given plausibility enough to
their theories, to leave many a one in doubt, whether it is really a new
triumph of human discovery, or merely a later form of empiricism. Its
professors are commonly converts to their own theories, at least in a
great degree; for, strange as it may seem, there can mingle with the
disposition to deceive others, the power of deceiving one's self; and
while they exercise much acuteness and penetration in discovering, by
the air, look, dress, and manner of those who consult them, the leading
points in the history or character of persons of whom they have no
previous knowledge, they at the same time persuade themselves that they
see something indicative of their circumstances in their finger nails.
Such is the equivocal character of the greater part of their sect: but
there are some who are mere honest dupes to the pretensions of the
science; and others again, who have not one tittle of credulity to
extenuate their impudent pretensions.
"When I was here before, I remember a physician, who acquired great
celebrity by affecting to cure diseases by examining a lock of the
patient's hair; and, not content with merely pronouncing on the nature
of the disease, and suggesting the remedy, he would enter into an
elaborate, and often plausible course of reasoning, in defence of his
system.
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