John Bunyan (1628-1688) was an English Puritan preacher and writer, best known for his allegorical work "The Pilgrim's Progress." Born in Bedfordshire, England, Bunyan was imprisoned for twelve years for preaching without a license. During his time in prison, he wrote "The Pilgrim's Progress," which portrays the Christian life as a journey from the City of Destruction to the Celestial City. His book has become one of the most widely read books in the world. He also wrote several other religious works, including "Grace Abounding to the Chief of Sinners," an account of his own spiritual journey. After his release from prison, he continued to preach and write, and had a significant impact on the Christian and literary heritage of England.