A philosopher’s personal meditation on how painful emotions can reveal truths about what it means to be truly human.

Under the light of ancient Western philosophies, our darker moods like grief, anguish, and depression can seem irrational. When viewed through the lens of modern psychology, they can even look like mental disorders. The self-help industry, determined to sell us the promise of a brighter future, can sometimes leave us feeling ashamed that we are not more grateful, happy, or optimist...