The poem opens with a parting kiss and a doubt that devours everything: if hope has flown «in a night, or in a day», does it matter how it went? «All that we see or seem is but a dream within a dream».
In the second stanza the doubt turns into physical anguish: the speaker stands on the shore, grains of golden sand slipping through his fingers into the sea, and however tightly he grips he cannot save even one. The question he began with returns at the end, now with no possible answer. It is one of Poe's last poems, published the year he died.