Different sorts of stresses (Episode 9)

Different sorts of stresses and their superposition.  A lot on one line in Paradise Lost: "Is this the region, this the soil, the clime...?"  And a bit on one line in Yeats: "Vain gaiety, vain battle, vain repose."  And then the opening line of Paradise Lost: the stress in the word "first," the countervailing stress on the word "disobedience."