SEX and a changing civilisation - BY KENNETH WALKER - PREFACE - I SUPPOSE that it is inevitable that by some readers this should be regarded as an immoral, and even as an irreligious book. In actual fact it is neither, unless the word irnmral be used in its strictest sense for that which is contrarv to cus- J tom. If anything, it is a religious book for, even when not directly expressed, the same idea will be found shining- through the text of every...