Goe, and catche a falling starre,
Get with child a mandrake roote,
Tell me, where all past yeares are,
Or who cleft the Divels foot,
The first three lines begin with imperatives as if in the middle of a conversation. The technique is known as  in medias res , Latin for ‘in the middle of things’. The draws the reader in.  We can speculate on the conversation that led up to this opening, and later we learn that it reflects Donne’s view that finding a perfect woman is an impossibility. 
 So begins Donne’s list of impossible tasks.
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