[T]his is an astonishingly amazing book, truly revolutionary in modern philosophy about what it is really about, namely, in Walsh's words, the luminosity of existence, a wonderfully philosophic expression. - James V. Schall, Georgetown University My encounter with The Modern Philosophical Revolution has been one of the most formative experiences in my life as a philosopher. I have no hesitation in placing it along with Bernard Lonergan's Insight and Eric Voegelin's Order and History as one of the greatest works in contemporary English-language philosophy, and I predict its French and German translations will follow even more rapidly than did those of Lonergan's and Voegelin's opera magna. Brendan Purcell, Dublin, Ireland, The Review of Metaphysics