In Memory of WB Yeats

I looked this poem up on google because Sexson cited the beautiful last lines after my presentation, reminding us that poetry is meant to praise, and that a defense of poetry is, effectively, it's praise. Here is the poem in its entireity.

This is the poet WH Auden who wrotet "In Memory of WB Yeats". Not surprisingly, he was greatly influenced by William Blake.
http://www.poets.org/viewmedia.php/prmMID/15544

For some reason, when i searched for this poem i was bombarded by website from church groups. Its been used in an large amount of sermons.