In The One, particle physicist Heinrich Paes presents a bold idea: fundamentally, everything in the universe is an aspect of one unified whole. This idea, called monism, has a rich 3,000-year history: Plato believed that 'all is one', but monism was later rejected as irrational and suppressed as a heresy by the medieval Church. Nevertheless, monism persisted, inspiring Enlightenment science and Romantic poetry. Paes shows how monism could inspire physics today, how it could slice through the intellectual stagnation that has bogged down progress in modern physics and help science achieve the 'grand theory of everything' that it has been chasing for decades. Blending physics, philosophy, and the history of ideas, The One is an epic, mind-expanding journey through millennia of human thought and into the nature of reality itself. AUTHOR: Heinrich Paes is a professor of theoretical physics at TU Dortmund University in Germany. He has held positions at Vanderbilt University, the University of Alabama, and the University of Hawai'i and has conducted research visits at CERN and Fermilab. He lives in Bremen, Germany.