Johnny Cash:

"It hurts so bad."

Sam Jones:

In physics, Markov chain processes underlie our most basic understanding of the world around us, from the way liquid turns to gas to the way a drop of vivid ink might slowly diffuse through a glass of water. If you treated people like atoms, the actuaries reasoned, you could apply the same maths.

By the time David Li got to New York, in 1998, the quants had taken over the asylum.

Nassim Nicholas Taleb:

"Anything that relies on correlation is charlatanism."

David Li, from Felix Salmon's article:

"The most dangerous part is when people believe everything coming out of it."