Calm of mind, all passion spent.

The line evokes a state of inward stillness achieved after emotional turbulence has exhausted itself: a mind no longer driven by desire, anger, fear, or grief, but settled into quiet equilibrium. In Miltonic terms, such calm can suggest both moral discipline (the governance of the passions by reason) and the aftermath of intense spiritual or psychological struggle. Read this way, “all passion spent” implies not mere numbness but a completed cycle—feeling has run its course, leaving clarity and composure. The brevity and cadence make it sound like a concluding judgment or epitaph-like summation, emphasizing repose after conflict.