Joy, anger, sorrow, delight, forethought, regret, inconstancy, compliance, pride, greed, indulgence, willfulness, flattery, insolence — these are like the musical chords from an empty hollow, or mushrooms in damp places. They keep alternating and changing, day and night, but no one knows what they spring from. Let it be! Let it be! How can we find the source of their beginning?
Daoist philosopher