Jonathan Franzen said this quote
“ We who were not so pathologically far out on the spectrum of self-involvement, we dwellers of the visible spectrum who could imagine how it felt to go beyond violet but were not ourselves beyond it, could see that David was wrong not to believe in his lovability and could imagine the pain of not believing in it. How easy and natural love is if you are well! And how gruesomely difficult--what a philosophically daunting contraption of self-interest and self-delusion love appears to be--if you are not! And yet ... the difference between well and not well is in more respects a difference of degree than of kind. Even though David laughed at my much milder addictions and liked to tell me that I couldn't even conceive of how moderate I was, I can still extrapolate from these addictions, and from the secretiveness and solipsism and radical isolation and raw animal craving that accompany them, to the extremity of his. I can imagine the sick mental pathways by which suicide comes to seem like the one consciousness-quenching substance that nobody can take away from you. ”