The speaker sings of the baseless and inexplicable tears that rise in his heart and pour forth from his eyes when he looks out on the fields in autumn and thinks of the past. This past, ("the days that are no more") is described as fresh and strange. It is as fresh as the first beam of sunlight that sparkles on the sail of a boat bringing the dead back from the underworld, and it is sad as the last red beam of sunlight that shines on a boat that carries the dead down to this underworld.
The speaker then refers to the past as not "fresh," but "sad" and strange. As such, it resembles the song of the birds on early summer mornings as it sounds to a dead person, who lies watching the "glimmering square" of sunlight as it appears through a square window.
In the final stanza, the speaker declares the past to be dear, sweet, deep, and wild.
It is as dear as the memory of the kisses of one who is now dead, and it is as sweet as those kisses that we imagine ourselves bestowing on lovers who actually have loyalties to others. So, too, is the past as deep as "first love" and as wild as the regret that usually follows this experience. The speaker concludes that the past is a "Death in Life."
This poem is written in blank verse, or unrhymed iambic pentameter. It consists of four five-line stanzas, each of which closes with the words "the days that are no more."
"Tears, Idle Tears" is part of a larger poem called "The Princess," published in 1847. Tennyson wrote "The Princess" to discuss the relationship between the sexes and to provide an argument for women's rights...