I was a professional astrologer for many years, and I always referred to Grant Lewi's insightful Sun-Moon combinations in Heaven Knows What in order to get a "foundational reading" of my clients. Lewi was a brilliant writer/ psychologist/astrologer, and his ability to deeply decipher the core tendencies of people via their Sun-Moon combination was nothing short of amazing.The planetary aspect analyses in this book are also excellent, though Lewi, for some reason, ignores oppositions and Pluto aspects. I consider this book "must" reading (and reference material) for astrologers and recommend supplementing it with the writings of Alan Oken, Stephen Arroyo, and Robert Hand.