Unless I am engaging in or imagining myself engaging in social interaction or something specifically involving words (reading, listening to lyrical music, etc), this is generally my primary mode of "thinking." "Thoughts" are not words or images, but impressions, concepts, patterns, wordless understanding, formless confusion; perception, opinions, and emotions are one cohesive blur which are nearly impossible to separate into distinct component units. If you have read Slaughterhouse Five by Kurt Vonnegut and remember the Tralfamadorians' books--I have imagined that it is like that. You simply open it and there it is all at once; nothing so cumbersome as turning from one page to the next to piece the story together bit by bit is required.
It can make communication a challenge. Amazingly, however, I have found that it is something one can alter somewhat over time and through concerted effort. I used to be nearly unable to express myself in any way resembling accuracy and now I think I do quite well, most of the time.
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"A flower falls, even though we love it; and a weed grows, even though we do not love it."