Jennifer Trusted's new book argues that metaphysical beliefs are essential for scientific inquiry. The theories, presuppositions and beliefs that neither science nor everyday experience can justify are the realm of metaphysics, literally `beyond physics'. These basic beliefs form a framework for our activities and can be discovered in science, common sense and religion. By examining the history of science from the eleventh century to the present, this book shows how religious and mystical beliefs, as well as philosophical speculation have had a considerable role in motivating scientists and inspiring scientific inquiry. Physics and Metaphysics presupposes no technical knowledge of either philosophy or science. It is an ideal introduction to science and the important forces that have shaped its history and ideas.