such as this 'Essay on Criticism' instead of longer and more ambitious poems which Pope planned and in part executed in his boyhood. There is no reason to believe with Mr. Elwin that this passage proves that Pope formed the design of the poem after the death of Walsh. * * * * * AN ESSAY ON MAN INTRODUCTION The 'Essay on Man' is the longest and in some ways the most important work of the third period of Pope's career. It corresponds closely to his early work, the 'Essay on Criticism'. Like the earlier work, the 'Essay on Man' is a didactic poem, written primarily to diffuse and popularize certain ideas of the poet. As in the earlier work these ideas are by no means original with Pope, but were the common property of a school of thinkers in his day. As in the 'Essay on Criticism', Pope here attempts to show that these ideas have their origin in nature and are consistent with the common sense of man. And finally the merit of the later work, even more than of the earlier, is due to the force and brilliancy of detached passages rather than to any coherent, consistent, and well-balanced system which it presents. The close of the seventeenth century and beginning of the eighteenth was marked by a change of ground in the sphere of religious controversy. The old debates between the Catholic and Protestant churches gradually died out as these two branches of Western Christianity settled down in quiet possession of the territory they still occupy. In their place arose a vigorous controversy on the first principles of religion in general, on the nature of God, the origin of evil, the place of man in the universe, and the respective merits of optimism and pessimism as philosophic theories. The controversialists as a rule either rejected or neglected the dogmas of revealed religion and based their arguments upon real or supposed facts of history, physical nature, and the mental processes and moral characteristics of man. In this controversy the two parties at times were curiously mingled. Orthodox clergymen used arguments which justified a strong suspicion of their orthodoxy; and avowed freethinkers bitterly disclaimed the imputation of atheism and wrote in terms that might be easily adopted by a devout believer.