Gray is as good an example as can be found of a poet whose works abound in this species of semi-original conceptions. Industrious critics track his best lines back, and find others like them which doubtless lingered near his fancy while he was writing them. The same critics have been equally busy with the works of Milton, and equally successful. They find traces of his reading in half his works; not, which any reader could do, in overt similes and distinct illustrations, but also in the very texture of the thought and the expression. In many cases doubtless, they discover more than he himself knew. A mind like his, which has an immense store of imaginative recollections, can never know which of his own imaginations is exactly suggested by which recollection. Men awake with their best ideas; it is seldom worth while to investigate very curiously whence they came. Our proper business is to adapt and mold and act upon them. Of poets perhaps this is true even more remarkably than of other men: their ideas are suggested in modes, and according to laws, which are even more impossible to specify than the ideas of the rest of the world. Second-hand poetry, so to say, often seems quite original to the poet himself; he frequently does not know that he derived it from an old memory: years afterwards it may strike him as it does others. Still, in general, such inferior species of creation is not so likely to be found in minds of singular originality as in those of less. A brooding, placid, cultivated mind, like that of Gray, is the place where we should expect to meet with it. Great originality disturbs the adaptive process, removes the mind of the poet from the thoughts of other men, and occupies it with its own heated and flashing thoughts. Poetry of the second degree is like the secondary rocks of modern geology,--a still, gentle, alluvial formation: the igneous glow of primary genius brings forth ideas like the primeval granite, simple, astounding, and alone. Milton's case is an exception to this rule. His mind has marked originality, probably as much of it as any in literature: but it has as much of molded recollection as any mind, too. His poetry in consequence is like an artificial park, green and soft and beautiful, yet with outlines bold, distinct, and firm, and the eternal rock ever jutting out; or better still, it is like our own lake scenery where nature has herself the same combination, where we have Rydal Water side by side with the everlasting upheaved mountain. Milton has the same union of softened beauty with unimpaired grandeur; and it is his peculiarity.