The Restoration period in England saw the separation of the king's personal finances from public funds. Puritanism influenced great works from Milton and Bunyan, while paganism produced the poems of Herrick and comedies that depicted depravity. The eras of King Charles I, the Civil War, and the Commonwealth were not conducive to literature. The age was materialistic, cynical, and its tragedies and comedies lacked substance, though Newton made discoveries in physics.