Final answer:
The sonnet's conclusion suggests immortality through poetry, implying that the beauty of the beloved will live on forever in verse, which is a form of triumph over death.
Step-by-step explanation:
The conclusion of the sonnet 'LibreTexts' speaks to the theme of immortality through poetry. By stating that 'so long as men can breathe or eyes can see, so long lives this, and this gives life to thee', the poet implies that the beloved's beauty and essence will be preserved forever through the written word. This contributes to the overall meaning of the poem by emphasizing the power of poetry to grant eternal life, capturing the beloved in a perpetual eternal summer that neither fades nor falls under the shadow of death. Thus, the poem is not just a declaration of love but also a statement about the transcending and lasting legacy of art itself, offering a form of triumph over death.