What does it mean to be a progressive, not just in the narrow political sense, but in your philosophy, your belief system, your worldview? The Progressive Worldview offers a three-volume response to this question, developing a detailed account of what it means to hold a progressive worldview and making a case for why we should. Volume I: The History of Progress begins this project by tracing the development of the progressive worldview from its origins in the Scientific Revolution through the closing decades of the twentieth century. In telling this story, The History of Progress follows two tracks. The first details how advances in modern science have radically changed our picture of how the world is put together. The second, a moral track, investigates how this evolving view of nature has altered our conception of how we ought to organize and govern ourselves. Equal parts history, science, philosophy, and political evangelism, The Progressive Worldview seeks to help contemporary progressives articulate answers to the questions humans have posed for as long as they have existed: Where does the world come from? How does it operate? Where is it headed? And what is our place within it?