"Thy firmness makes my circle just,
And makes me end where I begun..."See in text(A Valediction: Forbidding Mourning)
In an example of unexpected imagery used by the metaphysical poets, Donne concludes his poem with the speaker assuring his lover that her love controls his circle (his travels), and, like a compass circumscribing a circle, his travels naturally bring him to his point of origin—her.
