  These twenty-two lectures, with exercises, comprise the extent of what was
meant to be a full-year graduate-level course on the strong interactions and
QCD, given at Caltech in 1987-88. The course was cut short by the illness that
led to Feynman's death. Several of the lectures were finalized in collaboration
with Feynman for an anticipated monograph based on the course. The others,
while retaining Feynman's idiosyncrasies, are revised similarly to those he was
able to check. His distinctive approach and manner of presentation are manifest
throughout. Near the end he suggests a novel, nonperturbative formulation of
quantum field theory in $D$ dimensions. Supplementary material is provided in
appendices and ancillary files, including verbatim transcriptions of three
lectures and the corresponding audiotaped recordings.
