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I give a personal account of the development of the field of heavy quarks.After reviewing the experimental discovery of charm and bottom quarks, Idescribe how the field's focus shifted towards determination of CKM elementsand how this has matured into a precision science.Comment: This talk was presented during the ceremony awarding the Medalla 2003  of the Division of Particles and Fields of The Mexican Phsyical Society, at  the IX Mexican Workshop on Particles and Fields; submitted for proceedings; 9  pages, 9 figures; replacement: fix multiple typo

Heavy meson physics: what have we learned in twenty years?