Sounds familiar?
When a Person applies himself to any particular Study, so as to fix his Attention deeply on the Ideas and Terms belonging to it, and to be very little conversant in those of other Branches of Knowledge, it is commonly observed, that he becomes narrow-minded, strongly persuaded of the Truth and Value of many Things in his own particular Study, which others think doubtful or false, or of little Importance, and after some time subject to low Spirits, and the Hypochondriacal Distemper.
—David Hartley, 1747
(Observations on Man..., Part I, 397)
more soon!
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