Why is Sonnet 18 so famous?

Why is Sonnet 18 so famous?
"Shall I compare thee to a summer's day? ... The lover Shakespeare in 'Sonnet 18' understands the significance of love as a life-giving force and in the couplet he, therefore, proclaims:“So long as men can breathe or eyes can see,So long lives this, and this gives life to thee.”

Reference:
Why is Shakespeare's "Sonnet 18" so famous? - ENotes
Aug 2, 2019

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