Cognition doesn't require language, but it can use language. The brain is a parallel processing engine, and can recruit several modules at once for cognition,

Cognition doesn't require language, but it can use language. The brain is a parallel processing engine, and can recruit several modules at once for cognition, spatial modules, visual ones etc...[1] It's a good thing we don't think in words, because as good as they are for transmitting information to others, and for recording it, it is a serial format, and the part of our brain that processes it has a limited capacity.[2] If you've ever had the solution to a problem come to you before you can express it in words, you know that words aren't required for cognition, even awareness isn't.[3] [1] http://psychologydictionary.org/working-memory/ http://psychologydictionary.org/working-memory/ [2] http://psychologydictionary.org/phonological-loop/ http://psychologydictionary.org/phonological-loop/ [3] Cognition can go on subconsciously and then present us with the solution to a problem ready made. They typical Eureka experience.