From a drop of water a logician could infer the possibility of an Atlantic or a Niagara without having seen or heard of one or the other.
Source: Sherlock Holmes in A Study in Scarlet, pt. 1, ch. 2, 1887.
-- Arthur Conan Doyle, (May 22 1859-1930), Scottish author, physician; He created the detective Sherlock Holmes in A Study in Scarlet, 1887.