Fritjof Capra, scientist, educator, activist, and accomplished author, presents the evolution of his thought over five decades in . First introduced in the late 1950s to the work of Werner Heisenberg, a founder of quantum mechanics, Capra quickly intuited the connections between the discoveries of quantum physics and the traditions of Eastern philosophy—resulting in his first book, the bestselling . This synthesis, representative of the change from the mechanistic worldview of Descartes and Newton to a systemic, ecological one, went on to inform Capra's thinking about the life sciences, ecology, and environmental policy.Today Fritjof Capra remains a major figure at the crossroads of physics, spirituality, environmentalism, and systems theory. Organized thematically and chronologically, the essays in document the revolutionary and far-reaching intellectual journey of one of the major public thinkers of the last half-century.