In this book the authors develop and work out applications to gravity and gauge theories and their interactions with generic matter fields, including spinors in full detail. Spinor fields in particular appear to be the prototypes of truly gauge-natural objects, which are not purely gauge nor purely natural, so that they are a paradigmatic example of the intriguing relations between gauge natural geometry and physical phenomenology. In particular, the gauge natural framework for spinors is developed in this book in full detail, and it is shown to be fundamentally related to the interaction between fermions and dynamical tetrad gravity.
I have always had a great interest in the philosophy of science. At first this interest led to reflections on the mathematical sciences;l later my focus shifted to the natural sciences;2 during the past twenty years or so my interest has also included the behavioral, social, and historical sciences) From the very start my interest was always combined with a concern for the history of the sciences. In philosophy of science proper, my main interest was not in logical, methodological, or even epistemological issues, although I obviously studied and taught the most important insights proposed in the leading publications in this large field of study. My concern has always been predominantly ontological; and in that area I have approached the relevant issues from a 4 phenomenological perspective. For what follows it is perhaps of some importance to mention here that I came to phenomenology in a rather indirect way, through the philosophy of Nicolai Hartmann. Yet it was mainly the influence of Herman Van Breda and Alphonse De Waelhens which led me directly to Husserl's phenomenology. At first I foÂ cused almost exclusively on Husserl's phenomenology. Later I moved in the direction of the philosophy of Merleau-Ponty and, 1Cf. Joseph J. Kockelmans, Philosophy of Mathematics in the Middle Ages (in Dutch) (Langemark: Vonksteen, 1953); "On the Mode of Being of Mathematical Entities" (in Dutch), in Tijdschrift voor Philosophie, 16(1954), pp. 289-33l. 2Joseph J. Kockelmans, On Time and Space.
Natural theology, in the view of many, is in crisis. In this long-awaited book, Alister McGrath sets out a new vision for natural theology, re-establishing its legitimacy and utility. <ul> <li>A timely and innovative resource on natural theology: the exploration of knowledge of God as it is observed through nature <li>Written by internationally regarded theologian and author of numerous bestselling books, Alister McGrath <li>Develops an intellectually rigorous vision of natural theology as a point of convergence between the Christian faith, the arts and literature, and the natural sciences, opening up important possibilities for dialogue and cross-fertilization <li>Treats natural theology as a cultural phenomenon, broader than Christianity itself yet always possessing a distinctively Christian embodiment <li>Explores topics including beauty, goodness, truth, and the theological imagination; how investigating nature gives rise to both theological and scientific theories; the idea of a distinctively Christian approach to nature; and how natural theology can function as a bridge between Christianity and other faiths </ul>
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