You can read this poem here. You can, in fact, find it all over the web, but the version on this page has the correct punctuation (which allows the second sentence in stanza one to make sense). My not-terribly-inner Inner Pedant needed to find a correct version to link to.

Like so many great poems, what this poem has to say, it says all by itself. It has no need of me. So I simply want to take a moment to rejoice in the image of ‘the armada of/ our thoughts’. Oh, how many missions-of-war does my mind send itself on, and with what (usually vain) aspirations to achieve, to save, to conquer…