Nevertheless, it must be conceded, and such men as I have spoken of were the first to admit it, that lives such as these are necessarily imperfect. The stunting or the atrophy of the religious instinct, the hunger and thirst for something beyond the sphere of sense when left totally unsatisfied, produces at length a restless, tormented feeling, which turns the very joy of existence to sadness, and dims the light of life. Such men may plunge into pleasure, absorb themselves in their books or research, wear and waste themselves in the making of wealth, and for a time they are satisfied. But the imperious craving reasserts itself at length; there is the cry of the soul for some lost inspiration, some transfiguring influence to soften the hard way of life, console a lonely hour, comfort a bereavement, inspire that tenderness and sympathy, without which we are scarcely even human. One remembers Darwin's sorrowful admission, that the deadening of his spiritual instincts left him incapable of enjoying, or even tolerating, the rhythm of the poet's verse. The world has heard the note of weariness with which Mr. Spencer absolved himself from further effort on behalf of science and man. The late Prof. Romanes, in his volume entitled _A Candid Examination of Theism_, made the melancholy declaration that the admission of a philosophy of pure mechanism or materialism had, for him at least, "robbed the universe of its soul of beauty". In later years, as is well known, the same writer came to see things with other eyes. Mind took the place of force as the ultimate fact of creation, and with it the sun of loveliness returned once more.