Hospitalizations in general are blurry. The days are the same, precisely the same. Nothing changes. Life melts down to a simple progression of meals. They become a way of life fairly quickly. You may welcome this transition. It may seem inevitable to you. You have been removed from the world. It is all right, in a way, because there is nothing so sure, so safe, as routine.

And so I went through the looking glass, stepped into the netherworld, where up is down and food is greed, where convex mirrors cover the walls, where death is honor and flesh is weak. It is ever so easy to go. Harder to find your way back.

• Eating disorders are addictions. You become addicted to a number of their effects. The two most basic and important: the pure adrenaline that kicks in when you're starving—you're high as a kite, sleepless, full of a frenetic, unstable energy—and the heightened intensity of experience that eating disorders initially induce. At first, everything tastes and smells intense, tactile experience is intense, your own drive and energy themselves are intense and focused. Your sense of power is very, very intense. You are not aware, however, that you are quickly becoming addicted.

My students know I have a life, they know I've written about my life. They know some detail, probably more than they know about their physics teacher, but I would've told them anyway!

And so I am feeling numb. It's a curious feeling, and I get it all the time. My attention to the world around me disappears, and something starts to hum inside my head. Far off, voices try to bump up against me, but I repel them. My ears fill up with water and I focus on the humming in my head.

When you deal with nonfiction you deal with human characters.

There's childhood and early onset bipolar, but it transitions in your early adulthood into something a little bit different, and extremely severe. It was at that time that my impulse control just went out the window. Impulse control when you're manic just disappears.