That time of year thou mayst in me behold
When yellow leaves, or none, or few, do hang
Upon those boughs which shake against the cold,
Bare ruin’d choirs, where late the sweet birds sang.
In me thou seest the twilight of such day
As after sunset fadeth in the west,
Which by and by black night doth take away,
Death’s second self, that seals up all in rest.
In me thou see’st the glowing of such fire
That on the ashes of his youth doth lie,
As the death-bed whereon it must expire
Consumed with that which it was nourish’d by.
This thou perceivest, which makes thy love more strong,
To love that well which thou must leave ere long.
In this poem, the speaker invokes a series of metaphors to characterize the nature of what he perceives to be his old age. In the first quatrain, he tells the beloved that his age is like a “time of year,” late autumn, when the leaves have almost completely fallen from the trees, and the weather has grown cold, and the birds have left their branches. In the second quatrain, he then says that his age is like late twilight, “As after sunset fadeth in the west,” and the remaining light is slowly extinguished in the darkness, which the speaker likens to “Death’s second self.” In the third quatrain, the speaker compares himself to the glowing remnants of a fire, which lies “on the ashes of his youth”—that is, on the ashes of the logs that once enabled it to burn—and which will soon be consumed “by that which it was nourished by”—that is, it will be extinguished as it sinks into the ashes, which its own burning created. In the couplet, the speaker tells the young man that he must perceive these things, and that his love must be strengthened by the knowledge that he will soon be parted from the speaker when the speaker, like the fire, is extinguished by time.
In this sense, Sonnet
The couplet of this sonnet renews the speaker’s plea for the young man’s love, urging him to “love well” that which he must soon leave. It is important to note that the couplet could not have been spoken after the first two quatrains alone. No one loves twilight because it will soon be night; instead they look forward to morning. But after the third quatrain, in which the speaker makes clear the nature of his “leav[ing] ere long,” the couplet is possible, and can be treated as a poignant and reasonable exhortation to the beloved.