D. P. Walker's classic text is required reading for anyone who would understand Magic in the Renaissance Age. Walker writes clearly and simply, and focuses on two different categories of Magic that emerge out of Renaissance NeoPlatonism--he especially outlines Ficino's main ideas and the Pythagorian influence of music on principles of sympathetic vibration as a magical conduit. This is the best introduction to Renaissance Humanism and its role in the cultural history of Europe. If a serious but readable study is what you're looking for, then purchase this book.