Dr White's book is the first to be written on Schopenhauer's important foundation-work, On the Fourfold Root of the Principle of Sufficient Reason. It presents the arguments and analyses of Schopenhauer's work in systematic form and assesses the worth of those arguments and analyses, with particular emphasis on their positive merits. Schopenhauer divides the phenomenal world into four classes of object, discussing each of these in turn, and the chapters of White's book generally follow that order. But the book also contains a chapter of introduction showing how the Fourfold Root...