I have given this [word mind] as a title in order to make my idea intelligible, but when explaining the subject, instead of using the word mind, I shall use the word spirit. The word mind comes from a Sanskrit root which means mind and also man. In this way the name itself explains that man is his mind. Since the word mind is not understood in the same way by all those who use it in their everyday language, I think it best to use the word spirit instead.