Saint Clement of Rome was an early Christian leader and the fourth pope, serving in the late 1st century. He is traditionally believed to have been a disciple of Saint Peter, one of Jesus' apostles. Clement is best known for his letter, known as the First Epistle of Clement, which addressed issues of church leadership and unity among Christians. Clement's writings emphasize the importance of humility, obedience, and the role of the church in guiding believers. He is venerated as a saint in both the Roman Catholic Church and the Eastern Orthodox Church, with his feast day celebrated on November 23.