This audiobook is narrated by an AI Voice. This book traces the fascinating life of Roger Bacon, a Franciscan friar of the thirteenth century who dared to question the way knowledge was understood in his time. Between cloisters, university classrooms, and conflicts with authority, Roger Bacon defended the importance of experience, mathematics, and rigorous observation as paths toward truth, without ever renouncing his faith. Through his biography, the reader discovers his major scientific contributions, his intuitions about the experimental method, as well as his errors, his tensions with the Church, and the legends that transformed him into a 'magician' and a precursor of modern science.