from the author's mind, the moment in which he begins to execute is one of extreme perplexity and strain. Artists of indifferent energy and an imperfect devotion to their own ideal make this ungrateful effort once for all; and, having formed a style, adhere to it through life. But those of a higher order cannot rest content with a process which, as they continue to employ it, must infallibly degenerate towards the academic and the cut-and-dried. Every fresh work in which they embark is the signal for a fresh engagement of the whole forces of their mind; and the changing views which accompany the growth of their experience are marked by still more sweeping alterations in the manner of their art. So that criticism loves to dwell upon and distinguish the varying periods of a Raphael, a Shakespeare, or a Beethoven.
It is, then, first of all, at this initial and decisive moment when execution is begun, and thenceforth only in a less degree, that
