Kepler by Walter W. Bryant is a comprehensive and engaging biography that delves into the life and achievements of Johannes Kepler, one of the most influential astronomers and mathematicians of the early modern era. The book traces Kepler's journey from his humble beginnings in Germany to his groundbreaking discoveries that revolutionized our understanding of the cosmos. Bryant vividly portrays Kepler's relentless pursuit of knowledge, his struggles with poverty, ill health, and personal tragedy, and his unwavering dedication to science despite the religious and political turmoil of his time. The narrative explores Kepler's formative years, his education, and his early fascination with astronomy, leading to his collaboration with Tycho Brahe and his eventual formulation of the three laws of planetary motion. Bryant provides detailed accounts of Kepler's meticulous observations, mathematical genius, and the challenges he faced in reconciling his scientific work with the prevailing beliefs of his era. The book also highlights Kepler's contributions to optics, his work on the Rudolphine Tables, and his enduring legacy in the fields of astronomy and physics. Through vivid storytelling and careful research, Kepler offers readers an intimate portrait of a brilliant and complex figure whose insights laid the foundation for modern celestial mechanics. Bryant's biography not only illuminates Kepler's scientific achievements but also captures the spirit of curiosity and perseverance that defined his life, making this work an essential read for anyone interested in the history of science and the remarkable individuals who shaped our understanding of the universe.