Marginalium

You don’t think in any language:

The idea is that behind the words of a language lie concepts and behind the sentences of a language lie combinations of such concepts. To have a belief or a thought is to have a particular combination of concepts in mind. To believe that a man is running, then, is to have the relevant mental concepts, e.g., MAN and RUNNING (concepts are usually written in capital letters in cognitive science), and to have the capacity to put them together (i.e., MAN RUNNING). In this sense, the language of thought is the common code in which concepts are couched, thus explaining how speakers of different languages can at all entertain the same sort of thoughts. We all think in roughly the same mental language, a system composed of concepts that allows us to represent and make sense of the world.