Our upbringing and the whole atmosphere of the world we live in make it certain that our main temptation will be that of yielding to winds of doctrine, not that of ignoring them. We are not at all likely to be hidebound: we are very likely indeed to be the slaves of fashion. If one has to choose between reading the new books and reading the old, one must choose the old: not because they are necessarily better but because they contain precisely those truths of which our own age is neglectful. The standard of permanent Christianity must be kept clear in our minds and it is against that standard that we must test all contemporary thought. In fact, we must at all costs not move with the times. We serve One who said, “Heaven and Earth shall move with the times, but my words shall not move with the times” (Mt 24:35; Mk 13:31; Lk 21:33). – C. S. Lewis, “Christian Apologetics,” in: Essay Collection and Other Short Pieces.