Peter does a splendid job in conveying his experience of the Siddha Yoga path. He aptly shares his experience by comparing literature and teachings from across faiths while grounding his understanding in how own experience. His metaphors and language transform esoteric concepts into easy to understand ideas for the general reader.
One of my early reads in Siddha Yoga even before I took my first intensive. I had little argument against reincarnation in those days. It was very enjoyable. His story of rags to riches and of his discovery of his past life are very interesting.