Regarding the end of Alfred Tennyson’s “The Two Voices,” which he composed in 1833 during about of depression following his sister’s death:

The man, like all great humans, seems to have a touch of bipolarity. From conversing with suicide (voice number one) in the first three quarters of the poem, he emerges to a final line, “Rejoice! Rejoice!” (voice number two.) His sister seems to have prompted that monstrous question: what purpose is our suffering life if the end is certain death? We expect this genius of words and insights to deliver us to an answer which we ourselves have darkly sought. We read in breathless anticipation. The cure to our own morose hours seems promised by his brilliance. Then he says, in other words than this of course, “isn’t the everyday beautiful!” Suddenly we remember he is a poet. We are not exactly disappointed.