interest of the public in those who write for its entertainment naturally extends itself to their habits of life. All such habits, let it be said at once, depend on individual peculiarities. One will write only in the morning, another only at night, a third will be able to force himself into effort only at intervals, and a fourth will, after the manner of Anthony Trollope, be almost altogether independent of times and places. The nearest approach to a rule was that which was formulated by a great writer of the last generation, who said that morning should be employed in the production of what De Quincey called "the literature of knowledge," and the evening in impassioned work, "the literature of power."