Page:An Essay on the Life and Genius of Samuel Johnson.djvu/173

 that it proceeds from one who lived in fear of the same dreadful visitation; from one who says emphatically: "Of the uncertainties in our present state, the most dreadful and alarming is the uncertain continuance of reason." The inquiry into the cause of madness, and the dangerous prevalence of imagination, till, in time, some particular train of ideas fixes the attention, and the mind recurs constantly to the favourite conception, is carried on in a strain of acute observation; but it leaves us room to think, that the author was transcribing from his own apprehensions. The discourse on the nature of the soul, gives us all that philosophy knows, not without a tincture of superstition. It is remarkable, that the vanity of human pursuits was, about the same time, the subject that employed both Johnson and Voltaire; but Candide is the work of a lively imagination; and Rasselas, with all its splendour of eloquence, exhibits a gloomy picture. It should, however, be remembered, that the world has known the, as well as the philosopher. The