George Saintsbury,
Historical Manual of English Prosody
“ In fact, it is not excessive to regard the English fifteenth century as a period when all elements of prosody were thrown into a sort of cauldron, sack, sieve, or lucky-bag, in which, as according to the different metaphors suiting these objects, they were to be boiled down, shaken together, sifted out, and taken as fortune would have it, to supply the stock of a new venture in more orderly and polished verse-manufacture when actual speech had settled itself once more. ”
