These essays are based on lectures on the foundation of quantum theory, symmetries and representation theory, and the quantum theory of the superworld. The author examines the quantum world and superworld under the lens of symmetry and supersymmetry.
The author writes: Most of my thoughts on quantum theory are in these essays. The last section is on represenation theory. I do not like to call it an epilogue bucause it deals with a large part of what I have done in this area over the years...I have been thinking about a collection like this for many years that will bring together the many lectures I have given in various places.