Even those who have not yet read Dr. Broad’s recent book on The Mind and its Place in Nature have not improbably had their attention drawn to his carefully considered pronouncement on Behaviourism. At the close of ten pages of critical discussion he says: “ It seems to me that Reductive Materialism in general, and strict Behaviourism in particular, may be rejected. They are instances of the numerous class of theories which are so preposterously silly that only very learned men could have thought of them. I may be accused of breaking a butterfly on a wheel in this discussion of Behaviourism. But it is important to remember that a theory which is in fact absurd may be accepted by the simple-minded because it is put forward in highly technical terms by learned persons who are themselves too confused to know exactly what they mean. When this happens, as it has happened with Behaviourism, the philosopher is not altogether wasting time by analysing the theory and pointing out its implications” (pp. 623–4). I quote the passage at length so that those of us who dally with Behaviourism may realize just how they stand.