Ability of the first rank, yet more the force of exceptional genius, of course persist and triumph in spite of this or any obstacle. But even so the work for mankind of such ability or genius is hampered and minimised by the mental conditions of those whom it has to in?uence and to inspire. Inevitably, therefore, the question becomes how best to raise the level of average interpretative power, and with it that of average achievement. It is necessary here to repudiate in the strongest possible way any claim on the part of the writer to the possession of special or individual power to deal with recognised difficulties by means of the method here suggested. On the contrary, the whole point of the book is that what is offered is for the use of all alike. Unless its thesis can vindicate this claim it must be worse than useless.