The two great elder captains of poetic revolution, Coleridge and Wordsworth, have expounded their cause, in prose, with full maturity of thought and language: Wordsworth in the austere contentions of his famous prefaces to his second edition (1800), Coleridge in the luminous retrospect of the _Biographia Literaria_ (1816). In the interval a cloud of critics, including men of such gifts as Lamb, Hazlitt, and Leigh Hunt, were in their several ways champions of the same cause. But none of these has left any enunciation of theory having power to thrill the ear and haunt the memory like the rimes of this young untrained recruit, John Keats. It is easy, indeed, to pick his verses to shreds, if we choose to fix a prosaic and rational attention on their faults. What is it, for instance, that imagination is asked to do? Fly, or drive? Is it she, or her steeds, that are to paw up against the light? And why paw? Deeds to be done upon clouds by pawing can hardly be other than strange. What sort of a verb is 'I green, thou greenest?' Why should the hair of the muses require 'soothing'?--if it were their tempers it would be more intelligible. And surely 'foppery' belongs to civilization and not to 'barbarism': and a standard-bearer may be decrepit but not a standard, and a standard flimsy but not a motto. And so on without end, if we choose to let the mind assume that attitude and to resent the contemptuous treatment of a very finished artist and craftsman by one as yet obviously raw and imperfect. Byron, in his controversy with Bowles a year or two later, adopted this mode of attack effectively enough; his spleen against a contemporary finding as usual its most convenient weapon in an enthusiasm, partly real and partly affected, for the genius and the methods of Pope. But controversy apart, if we have in us a touch of instinct for the poetry of imagination and beauty, as distinct from that of taste and reason and 'correctness',--however clearly we may see the weak points of a passage like this, yet we cannot but feel that Keats touches truly the root of the matter: we cannot but admire the ring and power of his appeal to the elements, his fine spontaneous and effective turns of rhetoric, and the elastic life and variety of his verse.