Intellect, because of insufficient data or emotional distortions, may be misleading. Sense, whether touch or sight, because of physical and mental illusions, may be deceptive. Thus we are forewarned by the practical experiences of life not to reject mentalism hastily merely because it offends intellect or conflicts with sense. It is easy for the impatient to dismiss mentalism with an irritable stamp of the foot, as Dr. Samuel Johnson did the kindred teaching of Berkeley, but men who have given more time and thought to this subject are not so hasty in reaching a conclusion. After thirty years of teaching academic philosophy in London, Dr. C.E.M. Joad was forced to confess that the questions involved in mentalism are too difficult to be settled with any degree of certainty.
-- Notebooks Category 21: Mentalism > Chapter 4 : The Challenge of Mentalism > # 56
