Some authors have conceptualized depression as a "depletion syndrome" because of the prominence of fatigability; they postulate that the patient exhausts his available energy during the period prior to the onset of the depression and that the depressed state represents a kind of hibernation, during which the patient gradually builds up a new story of energy.
You shall be free indeed when your days are not without a care, nor your nights without a want and a grief, but rather when these things girdle your life and yet you rise above them naked and unbound.
I'd been depressed before, of course. But I'm talking about really depressed. Not just feeling a bit down or sad, a depression that has something to do with biorhythms. I'm talking about the kind of depressed that floats in upon you like a fog. You can feel it coming and you can see where it is going to take you but you are powerless, utterly powerless to stop it. I know now.
There exists, at the bottom of all abasement and misfortune, a last extreme which rebels and joins battle with the forces of law and respectability in a desperate struggle, waged partly by cunning and partly by violence, at once sick and ferocious, in which it attacks the prevailing social order with the pin-pricks of vice and the hammer-blows of crime.
In the lives of the saddest of us, there are bright days like this, when we feel as if we could take the great world in our arms and kiss it. Then come the gloomy hours, when the fire will neither burn on our hearths nor in our hearts; and all without and within is dismal, cold, and dark. Believe me, every heart has its secret sorrows, which the world knows not, and oftentimes we call a man cold, when he is only sad.
Each sporadic burst of work, each minor success and disappointment, each moment of calm and relaxation, seemed merely a temporary halt on my steady descent through layer after layer of depression, like an elevator stopping for a moment on the way down to the basement.