FIFTEENTH TALK 297 time with his astral body be doing other things. I have heard it said, for example, to give you an instance which ^ou a^ know something about, that when I lecture, say on a Sunday night, various people among you have seen astral entities standing on the platform and coming up and speaking to me. That is truly seen so far, and it is quite often the case that various astral entities come running up; they want information of various sorts, they want answers to questions, or they want something done, while you still go on with the lecture. You have to learn how to do these things, and although that happens every Sunday night, I dare say you do not notice any serious lack of continuity. That is onJy a small and passing example. There are much more serious pieces of work than that to be done. It is true that the Occultist does learn to use his consciousness in that complicated kind of way« You can do it with things to which you are ac- customed ; a lady can knit and go on talking, because the knitting is a mechanical thing to her. I have myself seen curious examples of the same power of double concentration. I had much to do once with one of the great banks in London, and I have seen there how nien who were used to it could go on adding up enormous columns of figures and they could sing a song at the same time for the entertainment of their fellows. I must admit it would be impossible to me, but I have seen it done over and over again.