The science of fools with long memories.
Source, in full
Description of heraldry. Quoted by Planché in The Pursuivant of Arms; or, Heraldry Founded upon Facts (London: W. M. Wright, 1852) p. 3. Misattributed to Planché in Hoyt's New Cyclopedia of Practical Quotations (1922) p. 692. Sometimes attributed to Voltaire