What does a painting by Leonardo da Vinci and the first ancient Greek machine teach us about the evolution of scientific thinking? This is one of the many questions James Cowan explores as he analyses the transformation which has occurred since our shift away from a metaphysical to a scientific world-view. Max Plank, Walter Benjamin and Alfred Einstein join ancient and medieval thinkers alike to inform the thrust of his argument. This book traces the history of science and technology from its earliest beginnings in Greek thinking, through to its impact today. Not only has science introduced us to instrumentation as the basis of all modern activity, but it has caused us to make a radical fight from the sacred to the secular. Through scientists such as Max Planck and Albert Einstein, theologians like Thomas Aquinas and John of Ruysbroeck, philosophers Heraclitus and Empedocles, as well as the voices of numerous medieval mystics, Cowan highlights the relationship between spirit and body and offers a stimulating new look at how to balance two such important aspects of our lives.