Dietrich Bonhoeffer was a German Lutheran pastor, theologian, and anti-Nazi dissident, born on February 4, 1906. Known for his influential writings on Christianity’s role in the secular world, Bonhoeffer’s seminal works include "The Cost of Discipleship" and "Letters and Papers from Prison." A founding member of the Confessing Church, he opposed Hitler's regime and took part in a plot to overthrow it. His theological insights emphasized the need for active Christian ethics and deep personal faith. Arrested in 1943, Bonhoeffer was executed in April 1945. His legacy continues to inspire discussions on faith, resistance, and moral responsibility.