This book is brief and daring. Matter, Energy and Mentality: Exploring Metaphysical Reality by Richard Rydon is a book of speculative non-fiction. It is something to sink your metaphysical teeth into. It covers the relationships between Matter, Energy and Mentality, using Energy Redistribution (Unnecessary Action) as a common feature in the Universe. The book should appeal, especially, to those of a mathematical bent, where a number of descriptive equations are presented in an attempt to describe certain elusive aspects of Reality. The book also includes some more-detailed sections, which consider the relationships between Information and Entropy in various Systems.