“There are good books, indifferent books, and bad books. Amongst the good books some are honest, inspiring, moving, prophetic and improving. But in my language there is another category: there are Ah! Books. This is one of them. Ah! Books are those which induce a fundamental change in the reader's consciousness. They widen his sensibility in such a way that he is able to look upon familiar things as though he is seeing and understanding them for the first time. Ah! Books are galvanic. They touch the nerve centre of the whole being so that the reader receives an almost palpable physical shock. A tremor of excited perception ripples through the person. ”