Acknowledgements
I would like to thank Agnes Heller (1929â2019) who first showed these occasional lectures to me several years ago. She not only agreed to them being published but she also helped me with some of the factual details in the footnotes that allowed them to be as accurate as possible. I would also like to thank Pauline Johnson who has always been the first reader of my previous work. I would like to dedicate this book to her.