  The past leaves the surprising experimental successes of the simple
constituent quark model to be expained by QCD. Surprising agreement with
experiment from simple Sakharov-Zeldovich model (1966) having quarks with
effective masses and hyperfine interaction. Nambu's (1966) Colored quarks with
gauge gluons gave mass spectrum with only $qqq$ and $\bar q$ bound states. The
future opens the way to new insight into QCD from heavy flavor experiments
