Sublime

A phenomenon that a number of people have noted while in deep depression is the sense of being accompanied by a second self—a wraithlike observer who, not sharing the dementia of his double, is able to watch with dispassionate curiosity as his companion struggles against the oncoming disaster, or decides to embrace it. There is a theatrical quality

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A man's concern, even his despair, over the worthwhileness of life is an existential distress but by no means a mental disease.