“They're an impenetrable fortress of unknowability, really.”

“You can’t turn love on and off like a light switch, no matter how hard you try. All you can do is wall it off, one brick at a time, until you’ve created an impenetrable fortress around your emotions. And once that fortress is built, you camouflage it so well that even you can’t see it anymore.”

“When I was in Colditz, that impenetrable fortress, whittling away my life, I wanted to know this.""Looks like you're still there, Shura.""No," he said. "I'm in New York, a fly on the wall, trying to see you without me.”

“i feel like a curtain has dropped away and i'm seeing people for who they really are, different, and sharp, and unknowable.”

“We build fortresses around ourselves in order to protect the things that are important to us, and we forget that what's really important to us is the connection with other people.”

“We are ultimately unknowable to ourselves and others. Our past and future are mostly unknowable. God is unknowable. For the present the universe - its origins and its destiny - is unknowable, as is whether there are many universes. Infinity is unknowable. These are some of the fundamental reasons why I call myself an agnostic.”