This is the pre-verbal language that linguists call Mentalese. Hardly a language, more a matrix of shifting patterns, consolidating and compressing meaning in fractions of a second, and blending it inseparably with its distinctive emotional hue. ... So that when a flash of red streaks in across his left peripheral vision ... it already has the quality of an idea ... unexpected and dangerous, but entirely his, and not of the world beyond himself.

Author: Ian McEwan