John Donne on misery & happiness

I was referred to the poetry of John Donne this week by some comments from NT Wright...

here's a little piece that struck me, from Meditation XIII

We say, the Elements of man are misery, and happinesse, as though he had an equal proportion of both, and the dayes of man vicissitudinary, as though he had as many good daies, as ill, and that he liv’d under a perpetuall Equinoctial night, and day equall, good and ill fortune in the same measure. But it is far from that; hee drinkes misery, and he tastes happinesse; he mowes misery, and he gleanes happinesse; he journies in misery, he does but walke in happinesse; and which is worst his misery is positive, and dogmaticall, his happinesse is but disputable and problematicall; All men call Misery, Misery, but Happinesse changes the name, by the taste of man.