The sorrow of understanding is something more than madness; the relief is that this understanding is not continuous.

This couplet suggests that the pain of truly understanding life's complexities and realities can sometimes be even heavier than the state of madness. It's about how being aware and deeply comprehending things can bring a unique kind of sorrow. But there's a silver lining, a comfort in knowing that this deep, often painful understanding isn't constant. Thankfully, we don't carry that heavy burden of continuous awareness, allowing us moments of peace and temporary relief from the weight of knowing too much.