  This Fifth International WEIN Symposium is devoted to physics beyond the
standard model. This talk is about tau lepton physics, but I begin with the
question: do we know how to find new physics in the world of elementary
particles? This question is interwoven with the various tau physics topics.
These topics are: searching for unexpected tau decay modes; searching for
additional tau decay mechanisms; radiative tau decays; tau decay modes of the
W, B, and D; decay of the Z^0 to tau pairs; searching for CP violation in tau
decay; the tau neutrino, dreams and odd ideas in tau physics; and tau research
facilities in the next decades.
