The brain's activity is simply reaction to stimuli from the outside world, and the first "thought" or action of the brain is not translated into language, but, instead, manifested in reaction. To be hungry, someone doesn't have to think "I am hungry," he will simply be hungry. To respond to that hunger by finding food, be it at a store or off a bush, the mind will look to memory to seek a solution. When memory tells the mind, "ah, usually when you're hungry you check the fridge," it doesn't communicate in verbal language, it merely conjures the specific memories accounting for this assessment. We may choose to think in the language we speak, but those words are merely signifiers for objects and concepts. Their use is to communicate ideas to others, not to ourselves. Most people do finalize thought in word within their minds, but the words themselves are really only necessary to let others understand what and why we are thinking.