The Church today is engaged in a great crisis of self-examination. It is looking at its claims, its traditional role, its theology. It is revising its rituals. This reforming effort is intended to bring Christian worship fully into the twentieth century. But, alas, the zeal for coming up to date proceeds without recourse to one of the most relevant critical techniques which this century has produced, I mean sociological comparison. Hence some naivété in the religious reformer about his own role. He seems not to suspect how much his views are the product of his secular environment. Nor does he consider whether the faithful are free to follow his proposals, though they also must be constrained by their own social environment. More important, he does not seem to foresee any difficulty in abolishing some forms of worship and retaining others. Whereas, if the sociological dimension has as much power as I think it has, King Canute had more chance of saying which pebbles should remain dry.