William Blake and the Imagination in Ideas of Good and Evil by William Butler Yeats.

“We write of great writers, even of writers whose beauty would once have seemed an unholy beauty, with rapt sentences like those our fathers kept for the beatitudes and mysteries of the Church; and no matter what we believe with our lips, we believe with our hearts that beautiful things, as Browning said in his one prose essay that was not in verse, have ‘lain burningly on the Divine hand,’ and that when time has begun to wither, the Divine hand will fall heavily on bad taste and vulgarity.” [via]