This is, I think, the best and most philosophical account that I have ever met with of wit, which generally, though not always, consists in such a resemblance and congruity of ideas as this author mentions. I shall only add to it, by way of explanation, that every resemblance of ideas is not that which we call wit, unless it be such an one that gives delight and surprise to the reader. These two properties seem essential to wit, more particularly the last of them. In order, therefore, that the resemblance in the ideas be wit, it is necessary that the ideas should not lie too near one another in the nature of things; for, where the likeness is obvious, it gives no surprise. To compare one man's singing to that of another, or to represent the whiteness of any object by that of milk and snow, or the variety of its colours by those of the rainbow, cannot be called wit, unless, besides this obvious resemblance, there be some further congruity discovered in the two ideas that is capable of giving the reader some surprise. Thus, when a poet tells us the bosom of his mistress is as white as snow, there is no wit in the comparison; but when he adds, with a sigh, it is as cold too, it then grows into wit. Every reader's memory may supply him with innumerable instances of the same nature. For this reason, the similitudes in heroic poets, who endeavour rather to fill the mind with great conceptions than to divert it with such as are new and surprising, have seldom anything in them that can be called wit. Mr. Locke's account of wit, with this short explanation, comprehends most of the species of wit, as metaphors, similitudes, allegories, enigmas, mottoes, parables, fables, dreams, visions, dramatic writings, burlesque, and all the methods of allusion: as there are many other pieces of wit, how remote soever they may appear at first sight from the foregoing description, which upon examination will be found to agree with it. As true wit generally consists in this resemblance and congruity of ideas, false wit chiefly consists in the resemblance and congruity sometimes of single letters, as in anagrams, chronograms, lipograms, and acrostics; sometimes of syllables, as in echoes and doggrel rhymes; sometimes of words, as in puns and quibbles; and sometimes of whole sentences or poems, cast into the figures of eggs, axes, or altars; nay, some carry the notion of wit so far as to ascribe it even to external mimicry, and to look upon a man as an ingenious person that can resemble the tone, posture, or face of another.