 A second distinction that needs to be drawn here is between sentence tokens that are external, or public, and sentence tokens that are internal, or private. Examples of external sentence tokens were given in the last paragraph — piles of ink, sound waves, and so on. An internal sentence token, on the other hand, exists inside a particular person's head. There is a wide-spread view — due mainly to Jerry Fodor (1975 and 1987) but adopted by many others, e.g., Stich (1983) — that we are able to perform cognitive tasks (e.g., think, remember information, and have beliefs) only because we are capable of storing information in our heads in a neural language (often called mentalese, or the language of thought). In connection with beliefs, the idea here is that to believe that, say, snow is white, is to have a neural sentence stored in your head (in a belief way, as opposed to a desire way, or some other way) that means in mentalese that snow is white.