In the pleasant moonlight, we invited sadness, and thus with our own hands, we darkened the night.

This couplet beautifully describes how we sometimes bring sadness upon ourselves, even when everything around us is joyful. Imagine a beautiful, moonlit night, full of peace and happiness. Instead of enjoying this lovely atmosphere, we choose to invite our sorrows and worries, essentially turning a bright, pleasant night into a dark and gloomy one by our own actions and thoughts. It's a poignant reminder that often, our unhappiness is self-created, and we have the power to change our perspective and embrace the joy that's already present.