BOLINGBROKE: O, who can hold a fire in his hand
By thinking on the frosty Caucasus?
Or cloy the hungry edge of appetite
By bare imagination of a feast?
Or wallow naked in December snow
By thinking on fantastic summer’s heat?
O no, the apprehension of the good
Gives but the greater feeling to the worse.
Fell sorrow’s tooth doth never rankle more
Than when he bites but lanceth not the sore.

William Shakespeare (1564-1616) English dramatist and poet

Richard II, Act 1, sc. 3, l. 301ff (1.3.301-310) (1595)
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