The Canonization
Defensive opening
Donne begins by shutting down criticism before it starts. The imperative 'hold your tongue' frames love not as romantic but as an act requiring permission—he's already anticipating judgment.
Poetry as legacy
Donne shifts from defense to transformation: if they can't be buried like the great, they'll be 'canonized' through verse instead. 'Well-wrought urn' compares a perfect poem to a perfect tomb—both preserve what matters.
Eyes as microcosm
The final stanza's 'glasses of your eyes' and 'mirrors' and 'spies' aren't just romantic—they're metaphysical. Lovers' eyes contain and reflect the entire world, making them sacred objects worthy of veneration.