To convey ideas through the medium of images has always been the aim of those who are artists as well as thinkers in literature, and it is to a desire to give a sensuous environment to intellectual concepts that we owe Mr. Pater’s last volume. For these Imaginary or, as we should prefer to call them, Imaginative Portraits of his, form a series of philosophic studies in which the philosophy is tempered by personality, and the thought shown under varying conditions of mood and manner, the very permanence of each principle gaining something through the change and colour of the life through which it finds expression. The most fascinating of all these pictures is undoubtedly that of Sebastian Van Storck. The account of Watteau is perhaps a little too fanciful, and the description of him as one who was ‘always a seeker after something in the world, that is there in no satisfying measure, or not at all,’ seems to us more applicable to him who saw Mona Lisa sitting among the rocks than the gay and debonair _peintre des fêtes galantes_. But Sebastian, the grave young Dutch philosopher, is charmingly drawn. From the first glimpse we get of him, skating over the water-meadows with his plume of squirrel’s tail and his fur muff, in all the modest pleasantness of boyhood, down to his strange death in the desolate house amid the sands of the Helder, we seem to see him, to know him, almost to hear the low music of his voice. He is a dreamer, as the common phrase goes, and yet he is poetical in this sense, that his theorems shape life for him, directly. Early in youth he is stirred by a fine saying of Spinoza, and sets himself to realize the ideal of an intellectual disinterestedness, separating himself more and more from the transient world of sensation, accident and even affection, till what is finite and relative becomes of no interest to him, and he feels that as nature is but a thought of his, so he himself is but a passing thought of God. This conception, of the power of a mere metaphysical abstraction over the mind of one so fortunately endowed for the reception of the sensible world, is exceedingly delightful, and Mr. Pater has never written a more subtle psychological study, the fact that Sebastian dies in an attempt to save the life of a little child giving to the whole story a touch of poignant pathos and sad irony.