But although tact is a virtue, it is very closely allied to certain vices; the line between tact and hypocrisy is a very narrow one. I think the distinction comes in the motive: when it is kindliness that makes us wish to please, our tact is the right sort; when it is fear of offending, or desire to obtain some advantage by flattery, our tact is apt to be of a less amiable kind.
Source: On tact (written in Feb. 1, 1933 and pub. in Mortals and Others, v.1, 1975
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