  Partial restoration in nuclear matter of the chiral symmetry of QCD is
discussed together with some of its possible signals. Estimates of corrections
to the leading, linear dependence of the quark condensate are found to be
small, implying a significant reduction of that condensate in matter. The
importance of the pion cloud for the scalar quark density of a single nucleon
indicates a close connection between chiral symmetry restoration and the
attractive two-pion exchange interaction between nucleons. This force is
sufficiently long-ranged that nucleons in nuclear matter will feel a
significant degree of symmetry restoration despite the strong correlations
between them. Expected consequences of this include reductions in hadron masses
and decay constants. Various signals of these effects are discussed, in
particular the enhancement of the axial charge of a nucleon in matter.
