Jonathan Swift, another unique figure of very mixed traits, is like Defoe in that he connects the reign of William III with that of his successors and that, in accordance with the spirit of his age, he wrote for the most part not for literary but for practical purposes; in many other respects the two are widely different. Swift is one of the best representatives in English literature of sheer intellectual power, but his character, his aims, his environment, and the circumstances of his life denied to him also literary achievement of the greatest permanent significance.