This, then, being the nature of the ideal world in its whole range commensurate with our being, and these the methods of its intellectual and emotional appeal, it remains to examine the world of art in itself, and especially its genesis out of life. The method by which it is built up has long been recognized to be that of imitation of the actual, as has been assumed hitherto in the statement that all art is concrete. But the concrete which art creates is not a copy of the concrete of life; it is more than this. The mind takes the particulars of the world of sense into itself, generalizes them, and frames therefrom a new particular, which does not exist in nature; it is, in fact, nature made perfect in an imagined instance, and so presented to the mind's eye, or to the eye of sense. The pleasure which imitation gives has been often and diversely analyzed; it may be that of recognition, or that of new knowledge satisfying our curiosity as if the original were present, or that of delight in the skill of the artist, or that of interest in seeing how his view differs from our own, or that of the illusion created for us; but all these modes of pleasure exist when the imitation is an exact copy of the original, and they do not characterize the artistic imitation in any way to differentiate its peculiar pleasure. It is that element which artistic imitation adds to actuality, the difference between its created concrete and the original out of which that was developed, which gives the special delight of art to the mind. It is the perfection of the type, the intensity of the emotion, the inevitability of the plot,--it is the pure and intelligible form disclosed in the phases and movement of life, disengaged and set apart for the contemplation of the mind,--it is the purging of the sensual eye, enabling it to see through the mind as the mind first saw through it, which renders the world of art the new vision it is, the revelation accomplished by the mind for the senses. If the world of art were only a reduplication of life, it would give only the pleasures that have been mentioned; but its true pleasure is that which it yields from its supersensual element, the reason which has entered into it with ordering power. In the world thus created there will remain the imperfections which are due to the limitation of the artist, in knowledge, skill, and choice.