I dont think in words at all. That is why -quite often- I know what i want to tell but the correct word just doesnt pop up in my head. I can then explain the concept and other people can help me find the word in question. Even while writing this little response, this happened. You see in the first sentence: I know there is a nice word that could be used instead of "doesn't pop up" it resembles the word "evades"? You know when something just keeps out of your grasp, that word... my mind does a little movie and my "mouthbrain" tries to find the nice words for it. That is how I perceive it to be. I dont know how other people perceive this. I imagine they have little words popping up or something. But I dont understand how that kind of thinking could be used to think and reason. How can relationships between concepts be intuitively understood if one does not have a mental picture?