Of the Age, published in 1853, also fell fiat, and thenceforth Warren, after publishing his Works: Critical and Imaginative, in four volumes in 1854, retired on his laurels. He died in London on the 29th of July 1877.
Warren also wrote several legal works of repute - Introduction to Law Studies (1835), Extracts from Blackstone (1837), Manual of Parliamentary Law (1852).