There are still a couple of questions, often asked by students, that you may care to have answered; and the first of them usually takes the form: _Can a man be hypnotised against his will?_ To which the author’s reply always is: It depends on what you mean by ‘against his will.’ For consider! There is no reason at all why we may not, any one of us, be taken off guard and surprised into the hypnotic state. We have probably all been surprised by sleep during a lecture or a sermon; the conditions were favourable, and we nodded. So the conditions may be favourable for hypnosis; and if someone is watching us, and sees that the conditions are favourable, he may have us hypnotised before we know where we are. The risk is not great; but the possibility is there. Again, if a patient has fallen into the habit of taking hypnotic treatment, and if he has thus slipped into a position of invalidish dependence upon his physician, so that obedience to the suggestion of hypnosis has become natural to him, then it is entirely likely that the physician’s command would induce the hypnotic state, even if the patient at the time should not desire it. And what holds of physician and patient holds of any operator and any subject in like circumstances; the habit of obedience grows by obeying. In this sense, then, one might be hypnotised ‘against one’s will.’ If, however, the question means what it is probably intended to mean: Can another man come to me and, by virtue of some inherent power, force me into hypnosis in spite of my resistance to that suggestion? then the answer is No; no more than a man can force you to lend him money or to perjure yourself for him in a court of law. It is you who must entertain his suggestion; so long as you refuse to do that, you are immune to hypnosis at his hands.