In this book, Stephen R.L. Clark defends the primary faith of humankind, that there is a real world which is more than a shadow of our desires and fancies, and which can be discovered through right reason. Focusing on the way in which we can "turn aside" to the Truth from the normal delusions of self-concern, Clark offers a properly worked, Platonic metaphysics as the key to identifying that reality. This book is the final volume of Limits and Renewals, a trilogy based on the author's Stanton lectures, delivered at Cambridge between 1986 and 1989, and his Wilde lectures, delivered at Oxford in 1990.