Pauli's exclusion principle
     Spin:  a new quantum number, an intuitive picture

     Counting indistinguishable particles:  quantum statistics
          Fermi-Dirac (half-integral spin)
          Bose-Einstein (integral spin)
     Consequences for the many-body problem

Quantum chemistry and chemical physics

     Putting QM to work on the structure of matter
     Explaining the chemical bond:  the hydrogen molecule (H₂)

     The sociology of a border domain
     Philosophy:  reductionism

The quantum theory of fields (begin)

     QM as a full quantum mechanics:  open problems
          How do we quantize fields?
          What is the relation between fields and particles?
          How can we make QM consistent with special relativity?