Conference summary: What is high energy astrophyics?

The original intent of the conference was to focus, first, on the physical processes (accretion, collimation, and all the rest) shared by two or more of the kinds of sources generally thought of as belonging to high energy astrophysics and, second, on the full range of phenomena, at all wavelengths, exhibited by those sources. This summary therefore addresses some of these issues as well as some new results presented at the symposium and some of the still-unanswered questions that were raised