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Let's be real. Obviously the thought comes first and the way OP is worded is pretty retarded in that manner, but you can't deny that the development of language had a massive effect on the minds of humans. Maybe I'm a bit too much of a Chomskyan in this regard but I believe that the underlying structures behind language — the "universal grammar" — while not a grammar in the linguistic sense, form a logical underpinning in a more mathematical sense that structures the way we see and think about our surroundings. When philosophers say things like "the world is just our senses" this is part of what they mean. While one can and should argue that there is an objective reality (this is the non-retarded point of view, obviously), what we experience does not equal what IS, and I believe the way we structure and process incoming information has been heavily influenced by the development of language. Some further argue that the individual languages one speaks change this further, and denying this entirely is idiotic, as any knowledge gained changes the structure of the brain; not to say that the hard form of the Sapir-Wolf hypothesis holds, though.
Even when we think purely logically, visually, symbolically, or otherwise I believe these thoughts are still structured in some part by this underlying grammar. Specifically as far as visual thinking, conjured images and the such are often unseperable from their linguistic representations and even categories of images are deliniated by the language on speaks. Interestingly enough it is when these non-linguistic mental "images" (visual or otherwise) and their linguistic context become seperated that we get a cosmic Lovecraftian horror feeling; things apart from understanding ~ objects/schema apart from linguistic/grammatical/logical context.