On the other hand, they have been tempted to suppose that the episodes which are referred to by verbs pertaining to thinking include all forms of "intelligent behavior," verbal as well as nonverbal, and that the "thought episodes" which are supposed to be manifested by these behaviors are not really episodes at all, but rather hypothetical and mongrel hypothetical-categorical facts about these and still other behaviors. This, however, runs into the difficulty that whenever we try to explain what we mean by calling a piece of nonhabitual behavior intelligent, we seem to find it necessary to do so in terms of thinking. The uncomfortable feeling will not be downed that the dispositional account of thoughts in terms of intelligent behavior is covertly circular.
47. Now the classical tradition claimed that there is a family of episodes, neither overt verbal behavior nor verbal imagery, which are thoughts, and that both overt verbal behavior and verbal imagery owe their meaningfulness to the fact that they stand to these thoughts in the unique relation of "expressing" them. These episodes are introspectable. Indeed, it was usually believed that they could not occur without being known to occur. But this can be traced to a number of confusions, perhaps the most important of which was the idea that thoughts belong in the same general category as sensations, images, tickles, itches, etc. This mis-assimilation of thoughts to sensations and feelings was equally, as we saw in Sections 26 ff. above, a mis-assimilation of sensations and feelings to thoughts, and a falsification of both. The assumption that if there are thought episodes, they must be immediate experiences is common both to those who propounded the classical view and to those who reject it, saying that they "find no such experiences." If we purge the classical tradition of these confusions, it becomes the idea that to each of us belongs a stream of episodes, not themselves immediate experiences, to which we have privileged, but by no means either invariable or infallible, access. These episodes can occur without being "expressed" by overt verbal behavior, though verbal behavior is -- in an important sense -- their natural fruition. Again, we can "hear ourselves think," but the verbal imagery which enables us to do this is no more the thinking itself than is the overt verbal behavior by which it is expressed and communicated to others. It is a mistake to suppose that we must be having verbal imagery -- indeed, any imagery -- when we "know what we are thinking" -- in short, to suppose that "privileged access" must be construed on a perceptual or quasi-perceptual model.
Now, it is my purpose to defend such a revised classical analysis of our common-sense conception of thoughts, and in the course of doing so I shall develop distinctions which will later contribute to a resolution, in principle, of the puzzle of immediate experience. But before I continue, let me hasten to add that it will turn out that the view I am about to expound could, with equal appropriateness, be represented as a modified form of the view that thoughts are linguistic episodes.