The early transition from Catholicism to Protestantism was a complicated journey for England, as individuals sorted out their spiritual beliefs, chose their political allegiances, and confronted an array of religious differences that had sprung forth in their society since the reign of Henry VIII. Inner anxieties often translated into outward violence. Amidst this turmoil the poet and Protestant preacher John Donne (1572-1631) emerged as a central figure, one who encouraged peace among Christians. Raised a Catholic but ordained in 1615 as an Anglican clergyman, Donne publicly identified...