"No one single instant of it was unendurable. Here was a second right here: he endured it. What was undealable-with was the thought of all the instances all lined up and stretching ahead, glittering. [...] He could just hunker down in the space between each heartbeat and make each heartbeat a wall and live in there. Not let his head look over. What's unendurable is what his own head could make of it all. What his head could report to him, looking over and ahead and reporting. But he could choose not to listen; he could treat his head like G. Day or R. Lenz: clueless noise. He hadn't quite gotten this before now, how it wasn't just the matter of riding out the cravings for a Substance: everything unendurable was in the head, was the head not Abiding in the Present but hopping the wall and doing a recon and then returning with unendurable news you then somehow believed."
- David Foster Wallace, Infinite Jest