Horace Walpole turns to the letters and argues that: Walpole's numerous letters are often used as a historical resource. In one, dating from 28 January 1754, he coined the word serendipity which he said was derived from a "silly fairy tale" he had read, "The Three Princes of Serendip". The oft-quoted epigram, "This world is a comedy to those that think, a tragedy to those that feel", is from a letter of Walpole's to Anne, Countess of Ossory, on 16 August 1776. The original, fuller version appeared in a letter to Sir Horace Mann on 31 December 1769: "I have often said,
Three Witches Thomas Middleton's play "The Witch". David Garrick kept these added scenes in his eighteenth-century version. Horace Walpole created a parody of "Macbeth" in 1742 entitled "The Dear Witches" in response to political problems of his time. The witches in his play are played by three everyday women who manipulate political events in England through marriage and patronage, and manipulate elections to have Macbeth made Treasurer and Earl of Bath. In the final scene, the witches gather around a cauldron and chant "Double, double, Toil and Trouble / parties burn and Nonsense bubble." Into their concoction they throw such things as