Thanks to all of your recommendations, I picked up this book myself and must concur. Outstanding in every way.
The sections on Neo-Platonism, Hermeticism and Alchemy were concise and very clear. I can't think of another book on Tarot that explaines the influence of these philosophies on Renaissance thought so perfectly.
Also, the author has worked out a logical reconciliation between the facts and the fancies of the occultists. Too complex to describe here, but he essentially "separates the kernels from the chaff", as he puts it. Instead of completely discounting ALL of de Mellet, de Gébelin, Levi and Etteilla, he points out where they were on the mark -- at least philosophically.