Since what evening did a pain arise in my heart, I have fallen into a sleep, colder than pre-dawn's chill.

This couplet captures the profound mystery of sudden, deep sorrow. The poet asks, 'Since which evening did this pain awaken in my heart?' The answer is a profound sense of coldness—a chill that settles upon you like the time just before dawn. It speaks to a melancholy that isn't tied to a specific event, but rather a pervasive, existential ache that chills the soul.