hundred such mistakes? In order to explain the phenomena we are studying by the telepathic hypothesis, we must suppose that telepathy has infinite power with which no obstacle can interfere. Then why does it make mistakes? And why does it make just the mistakes that an imperfect, finite spirit would make? Must we suppose that Dame Telepathy is a mere incarnation of the demon of fraud and deceit? FOOTNOTES: [84] Evidently addressing George Pelham. [85] _Proc. of S.P.R._, vol. xiii. p. 519. CHAPTER XVIII Difficulties and objections--The identity of Imperator--Vision at a distance--Triviality of the messages--Spiritualist Philosophy--Life in the other world. Up till now I have said a great deal of evil of telepathy. I believe that I have demonstrated, not that the theory is false, but that it is an unlikely explanation of the facts. Shall we say, then, that the spiritualistic hypothesis, the only reasonable one after the dismissal of telepathy, can be accepted without difficulty and without objections? Not at all. Many objections, more or less serious, are still made to the spiritualistic hypothesis. To my mind there is only one that is serious; I will speak of it in conclusion. Many of the others are raised by persons who have a merely superficial acquaintance with the problem; their arguments are more polemical than scientific. To begin with, some of them want to know why the controls, Imperator, Doctor, Rector, Prudens, conceal themselves under these pseudonyms. If they are, as they say, disincarnated spirits, who formerly lived in bodies, why do they not say who they were? Does not their silence on this point indicate that they are only secondary personalities of the medium?