I appear to be running counter to the general view here. I feel that a great deal of my thought is languageless, like Jackie's "thinking in images". There are obviously exceptions to this, such as when I am thinking about words, and forming puns in my mind, and in fact whenever I am thinking about something that someone has said or written. When I hear a word, I visualize it spelled out, but that's something entirely different. If I think to myself "I'll just go down to the corner shop and buy a newspaper", I don't believe that there are words associated with that thought, just a picture in my mind.
I have heard people say that you don't know a particular second (third, fourth,..) language until you think in that language, but, given what I have said above, I have never understood the concept.
