What is important, then, is not that the critic should possess a correct abstract definition of beauty for the intellect, but a certain kind of temperament, the power of being deeply moved by the presence of beautiful objects. He will remember always that beauty exists in many forms. To him all periods, types, schools of taste, are in themselves equal. In all ages there have been some excellent workmen, and some excellent work done. The question he asks is always:--In whom did the stir, the genius, the sentiment of the period find itself? where was the receptacle of its refinement, its elevation, its taste? "The ages are all equal," says William Blake, "but genius is always above its age." Often it will require great nicety to disengage this virtue from the commoner elements with which it may be found in combination. Few artists, not Goethe or Byron even, work quite cleanly, casting off all débris, and leaving us only what the heat of their imagination has wholly [xi] fused and transformed. Take, for instance, the writings of Wordsworth. The heat of his genius, entering into the substance of his work, has crystallised a part, but only a part, of it; and in that great mass of verse there is much which might well be forgotten. But scattered up and down it, sometimes fusing and transforming entire compositions, like the Stanzas on Resolution and Independence, or the Ode on the Recollections of Childhood, sometimes, as if at random, depositing a fine crystal here or there, in a matter it does not wholly search through and transmute, we trace the action of his unique, incommunicable faculty, that strange, mystical sense of a life in natural things, and of man's life as a part of nature, drawing strength and colour and character from local influences, from the hills and streams, and from natural sights and sounds. Well! that is the virtue, the active principle in Wordsworth's poetry; and then the function of the critic of Wordsworth is to follow up that active principle, to disengage it, to mark the degree in which it penetrates his verse.