Out of this predominating interest in the souls of men, and out of his intense intellectual activity and scientific curiosity, grows one of Browning's greatest defects. He is often led too far afield, into intricacies and anomalies of character beyond the range of common experience and sympathy. The criminal, the "moral idiot," belong to the alienist rather than to the poet. The abnormalities of nature have no place in the world of great art; they do not echo the common experience of mankind. Already the interest is decreasing in that part of his poetry which deals with such themes. Bishop Blougram and Mr. Sludge will not take place in the ranks of artistic creations. Nor can the poet's "special pleading" for such types, however ingenious it may be, whatever philanthropy of soul it may imply, be regarded as justification. Sometimes, indeed, the poet is led by his sympathy and his intellectual ingenuity into defences that are inconsistent with his own standards of the true and the beautiful. The trait in Browning which appeals to the largest number of readers is his strenuous optimism. He will admit no evil or sorrow too great to be borne, too irrational to have some ultimate purpose of beneficence. "There shall never be one lost good," says Abt Vogler. The suicides in the morgue only serve to call forth his declaration:-- "My own hope is, a sun will pierce The thickest cloud earth ever stretched; * * * * * That what began best can't end worst, Nor what God blessed once, prove accurst." He has no fear of death; he will face it gladly, in confidence of the life beyond. His Grammarian is content to assume an order of things which will justify in the next life his ceaseless toil in this, merely to learn how to live. Rabbi Ben Ezra's old age is serene in the hope of the continuity of life and the eternal development of character; he finds life good, and the plan of things perfect. In brief, Browning accepts life as it is, and believes it good, piecing out his conception of the goodness of life by drawing without limit upon his hopes of the other world. With the exception of a few poems like _Andrea del Sarto_, this is the unbroken tone of his poetry. Calvinism, asceticism, pessimism in any form, he rejects. He sustains his position not by argument, but by hope and assertion. It is a matter of temperament: he is optimistic because he was born so. Different from the serene optimism of Shakespeare's later life, in _The Tempest_ and _The Winter's Tale_, in that it is not, like Shakespeare's, born of long and deep suffering from the contemplation of the tragedies of human life, it bears, in that degree, less of solace and conviction.