What counts is not necessarily the size of the dog in the fight — it's the size of the fight in the dog.

Remarks at Republican National Committee Breakfast (31 January 1958); Eisenhower here delivers his particular variation of a pre-existing proverb, which has since become widely dispersed as simply "It's not the size of the dog in the fight; it's the size of the fight in the dog." In that form it has become widely attributed to Mark Twain on the internet, as early as 1998, but no contemporary evidence of Twain ever using it has been located. The earliest known variants of it occur in 1911, one in a collection of sayings "Stub Ends of Thoughts" by Arthur G. Lewis, in Book of the Royal Blue Vol. 14, No. 7 (April 1911): "It is not the size of the dog in the fight that counts, but the fight in the dog that matters", as cited in The Dictionary of Modern Proverbs, edited by Charles Clay Doyle, Wolfgang Mieder, and Fred R. Shapiro, p. 232, and the other as "It is not the size of the dog in the fight that counts, but the fight in the dog that wins" in the evening edition of the East Oregonian (