The truth is that the modern world has committed itself to two totally different and inconsistent conceptions about education. It is always trying to expand the scope of education; and always trying to exclude from it all religion and philosophy. But this is sheer nonsense. You can have an education that teaches atheism because atheism is true, and it can be, from its own point of view, a complete education. But you cannot have an education claiming to teach all truth, and then refusing to discuss whether atheism is true.
Since the coming of the more ambitious psychological education, our schools have claimed to develop all sides of human nature; that is, to produce a complete human being. You cannot do this and totally ignore a great living tradition, which teaches that a complete human being must be a Christian or Catholic human being. You must either persecute it out of existence or allow it to make its own education complete.
When schooling was supposed to consist of spelling, of counting and making pothooks and hangers, you might make out some kind of case for saying that it could be taught indifferently by a Baptist or Buddhist. But what in the world is the sense of having an education which includes lessons in “citizenship”, for instance; and then pretending not to include anything like a moral theory, and ignoring all those who happen to hold that a moral theory depends on a moral theology.
— The Common Man (posth.; 1950).