They are not even good mirrors. For they do not reflect what they see. They become dark and empty. T hird, there is yet another extreme expression of emptiness. It is nihilism.
Nihilism is a kind of philosophy carved out of a pervasive experience of emptiness.
It tries normalize emptiness by asserting that nothingness is the ultimate principle of reality. Sometimes it tries to valorize nothingness by claiming that the courage to live demands we surrender to nothingness. N arcissism, depression, and nihilism are all expressions of emptiness. But ultimately we are subject to feelings of emptiness because we have emptied our lives of meaning. Our emptiness will never be filled with things, whether food, possessions, other people, stimulation, or whatever.