  Bacon ends his presentation of the idols in Novum Organum, Book I, Aphorism LXVIII, with the remark that men should abjure and renounce the qualities of idols, “and the understanding [must be] thoroughly freed and cleansed” (Bacon IV [1901], 69). He discusses the idols together with the problem of information gained through the senses, which must be corrected by the use of experiments (Bacon IV [1901], 27).