The man who knows too much about one particular subject is liable to become a terrible social infliction.
 Oliver Wendell Holmes Sr., Over the Teacups (1891). copy citation

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Author Oliver Wendell Holmes Sr.
Source Over the Teacups
Topic subject
Date 1891
Language English
Reference
Note
Weblink http://www.gutenberg.org/files/2689/2689-h/2689-h.htm

Context

“Talkative is apt to be a shallow fellow, and to say foolish things about matters he only half understands, and yet he has his place in society. The specialists would grow to be intolerable, were they not counterpoised to some degree by the people of general intelligence. The man who knows too much about one particular subject is liable to become a terrible social infliction. Some of the worst bores (to use plain language) we ever meet with are recognized as experts of high grade in their respective departments. Beware of making so much as a pinhole in the dam that holds back their knowledge.” source