There is an electric fire in human nature tending to purify – so that among these human creatures there is continually some birth of new heroism. The pity is, that we must wonder at it, as we should at finding a pearl in rubbish.
Source:Letter to George and Georgiana Keats (March 19, 1819); in The Complete Works of John Keats (ed. Gowans & Gray, 1900), Volume V, Page 37