It is, then, the privilege, it is more, it is the duty of the man of letters to speak out, to be fearless, to be frank, to give no ear to the puritans of his hour, to have no care for the objections of prudery; the life that he lives is the life he must depict, if his work is to be of any lasting value. He must be frank, but he must be something more. He must remember--hourly and momently he must remember--that his virtue, step by step, inch by inch, imperceptibly melts into the vice which stands at its pole; and that (to employ Aristotelian phraseology for the moment) there is a sort of middle point, a centre of equilibrium, to pass which is to disturb and overset the entire fabric of his labours. Midway between liberty and license, in literature as in morals, stands the pivot of good taste, the centre-point of art. The natural inclination of frankness, the inclination of the virtue in the rough, is to blunder on resolutely with an indomitable and damning sincerity, till all is said that can be said, and art is lost in photography. The inclination of frankness, restrained by and tutored to the limitations of art and beauty, is to speak so much as is in accordance with the moral idea: and then, at the point where ideas melt into mere report, mere journalistic detail, to feel intuitively the restraining, the saving influence of reticence. In every age there has been some point (its exact position has varied, it is true, but the point has always been there) at which speech stopped short; and the literature which has most faithfully reflected the manners of that age, the literature, in fine, which has survived its little hour of popularity, and has lived and is still living, has inevitably, invariably, and without exception been the literature which stayed its hand and voice at the point at which the taste of the age, the age's conception of art, set up its statue of reticence, with her finger to her lips, and the inscription about her feet: "So far shalt thou go, and no further."