“I'll bear every ordeal I must bear, as long as I can say to myself at any moment I choose: 'I am!' Through a thousand agonies, I am; writhing on the rack, I am! I'm locked in a cell, yes, but I am still alive. I can see the sun, and if I can't see the sun, I know there is the sun. And knowing there is the sun is already living.”
―
Fyodor Dostoevsky,
The Brothers Karamazov