The main point to note here is that these conversations are not occasional and temporary effusions of the imagination, but are the naïve expression of a socialization of the mind that is to be permanent and to underly all later thinking. The imaginary dialogue passes beyond the thinking aloud of little children into something more elaborate, reticent, and sophisticated; but it never ceases. Grown people, like children, are usually unconscious of these dialogues; as we get older we cease, for the most part, to carry them on out loud, and some of us practise a good deal of apparently solitary meditation and experiment. But, speaking broadly, it is true of adults as of children, that the mind lives in perpetual conversation. It is one of those things that we seldom notice just because they are so familiar and involuntary; but we can perceive it if we try to. If one suddenly stops and takes note of his thoughts at some time when his mind has been running free, as when he is busy with some simple mechanical work, he will be likely to find them taking the form of vague conversations. This is particularly true when one is somewhat excited with reference to a social situation. If he feels under accusation or suspicion in any way he will probably find himself making a defence, or perhaps a confession, to an imaginary hearer. A guilty man confesses “to get the load off his mind;” that is to say, the excitement of his thought cannot stop there but extends to the connected impulses of expression and creates an intense need to tell somebody. Impulsive people often talk out loud when excited, either “to themselves,” as we say when we can see no one else present, or to anyone whom they can get to listen. Dreams also consist very largely of imaginary conversations; and, with some people at least, the mind runs in dialogue during the half-waking state before going to sleep. There are many other familiar facts that bear the same interpretation—such, for instance, as that it is much easier for most people to compose in the form of letters or dialogue than in any other; so that literature of this kind has been common in all ages.