Could science, if properly understood, provide us with the methodological key to the salvation of humanity? That is a chief question coursing through the works of Karl Popper, who famously maintained that science cannot verify theories but only refute them, thereby bringing about progress. Nicholas Maxwell’s new book disputes this line of argument. By proposing a new conception of scientific methodology on disunified theories—which can be applied to all worthwhile human endeavours with problematic aims—this book calls for a new revolution in inquiry to help humanity advance towards a more civilized and enlightened world.