Aesop's Fables (1884)
212. The Gnat and the Bull.
A Gnat that had been buzzing about the head of a Bull, at length settling himself down upon his horn, begged his pardon for incommoding him; "but if," says he, "my weight at all inconveniences you, pray say so, and I will be off in a moment." "Oh, never trouble your head about that," says the Bull, "for 'tis all one to me whether you go or stay; and, to say the truth, I did not know you were there."
The smaller the Mind the greater the Conceit.
Aesop's Fables: A New Revised Version From Original Sources (translator not identified), 1884 . Illustrations by Ernest Henry Griset (1844-1907), John Tenniel (1820-1914) and Harrison Weir (1824-1906). Available online at Project Gutenberg.