Though in the domain of Dogma much has been done in recent years towards re-establishing the conformity between Faith and Reason, in the domain of Morals this is not so. On the contrary, we are confronted at the present time with a rupture between Catholic moral teaching and secular ethical thought which is far more disastrous than the nineteenth-century quarrel between Religion and Science. In no sphere is this rupture more manifest than in that of the ethics of sexual relationship and in the conceptions of society and of individual conduct dependent upon it. The problem does not, indeed, present itself to the average Catholic in these general terms, but in the more pressing form of the concrete case—in the opposition between the teaching of the Church and of the world around him on marriage, on the family, on chastity, on divorce, on birth-control and the rest. The devout Catholic will loyally accept the teaching of the Church on these several heads, but not many, perhaps, are able to give that teaching an intelligent assent; few are conscious of a consistent, coherent policy or doctrine underlying the Church’s precepts, which consequently are apt to appear as so many disconnected, arbitrary and unintelligible hardships; fewer still realise the essential conformity, not to say identity, between Christian moral law and right reason or common sense. Not seldom must the Church’s uncompromising teaching regarding, for example, ‘hard cases’ which seem to indicate divorce, sterilisation or contraception appear to the thinking Catholic as incomprehensibly harsh and irrational, and only by a blind act of faith can he accept it and stifle the protests of his own reasoning.