Quote from : City of Glass Book

Quinn froze. There was nothing he could do now that would not be a mistake. Whatever choice he made--and he had to make a choice--would be arbitrary, a submission to chance. Uncertainty would haunt him to the end. At that moment, the two Stillmans started on their way again. The first turned right, the second turned left. Quin craved an amoeba's body, wanting to cut himself in half and run off in two directions at once. (Chapter 7)