. . .there really is a difference between being brought up as a Christian and being brought up as a Jew or a Moslem or an atheist. The difference is that every Catholic child has learned from pictures, and even every Protestant child from stories, this incredible combination of contrasted ideas as one of the very first impressions on his mind. It is not merely a theological difference. It is a psychological difference which can outlast any theologies. It really is, as that sort of scientist loves to say about anything, incurable. Any agnostic or atheist whose childhood has known a real Christmas has ever afterwards, whether he likes it or not, an association in his mind between two ideas that most of mankind must regard as remote from each other; the idea of a baby and the idea of unknown strength that sustains the stars. His instincts and imagination can still connect them, when his reason can no longer see the need of the connection; for him there will always be some savour of religion about the mere picture of a mother and a baby; some hint of mercy and softening about the mere mention of the dreadful name of God. But the two ideas are not naturally or necessarily combined. They would not be necessarily combined for an ancient Greek or a Chinaman, even for Aristotle or Confucius. It is no more inevitable to connect God with an infant than to connect gravitation with a kitten. It has been created in our minds by Christmas because we are Christians, because we are psychological Christians even when we are not theological ones. In other words, this combination of ideas has emphatically, in the much disputed phrase, altered human nature. There is really a difference between the man who knows it and the man who does not. It may not be a difference of moral worth, for the Moslem or the Jew might be worthier according to his lights; but it is a plain fact about the crossing of two particular lights, the conjunction of two stars in our particular horoscope. Omnipotence and impotence, or divinity and infancy, do definitely make a sort of epigram which a million repetitions cannot turn into a platitude. It is not unreasonable to call it unique. Bethlehem is emphatically a place where extremes meet.
– The Everlasting Man (1925).