  In these lectures, I shall discuss small x physics and the consequences of
the high gluon density which arises as x decreases. I argue that an
understanding of this problem would lead to knowledge of the high energy
asymptotics of hadronic processes. The high gluon density should allow a first
principles computation of these asymptotics from QCD. This physics might be
experimentally probed in heavy ion colliders or in high energy electron-nuclear
collisions
