
In the course of Věc Makropulos, we learn that Emilia is in fact rather bored with living so long, constantly reinventing herself, and finding a new life and lover. She sings in her final aria that the relative brevity of life is what gives human existence its joys and meaning. Never-ending life seems to blur and ultimately render meaningless the differences between good and evil, happiness and sadness, and even life and death.