I frequently repeated this little experience (curious at any rate); and, every time, I had exact replies when I knew them, inexact when I was ignorant of them. (Section 657 of my Inquiry.) These examples might be multiplied _ad infinitum_. Everything leads us to think that it is we who are the actors in these experiments. But it is not so simple as one might suppose, and there is something else in it as well as ourselves. Certain unexplained things take place. In his remarkable work, _Intelligence_, Taine explains Spiritualistic communications by a sort of unconscious duplication of our mind, as I said above. The more singular a fact is [he writes[18]] the more instructive it is. In this respect, Spiritualistic manifestations themselves point the way to discoveries by showing us the coexistence at the same moment in the same individual of two thoughts, two wills, two distinct actions, the one conscious, the other unconscious; the latter he attributes to invisible beings. The brain is, then, a theatre on the stage of which several pieces are being played at once, upon several planes, of which only one is not subliminal. Nothing is more worthy of study than this plurality of the _me_. I have seen a person who, while speaking or singing, writes, without regard to the paper, consecutive sentences and even entire pages, without any knowledge of what she is writing. In my eyes her sincerity is perfect. Now she declares that at the end of a page she has no idea of what she has written on the paper. When she reads it, she is astonished, sometimes alarmed. The handwriting is different from her ordinary handwriting. The movement of the fingers and of the pencil is stiff and seems automatic. The writing always ends with a signature, that of a deceased person, and bears the mark of intimate thoughts, of a secret and inner reserve of ideas which the author would not like to divulge. Certainly there is proof here of a doubling of the _me_, the coexistence of two parallel and independent trains of thought, of two centres of action, or, if you wish, of two moral persons existing in the same brain, each one doing his work, and each one a different work, the one upon the stage and the other behind the scenes, the second as complete as the first, since, alone and unwitting of the other, it constructs consecutive ideas and fashions connected sentences in which the other has no part. This hypothesis is admissible, in the light of numerous observations of double consciousness.[19]