CS Lewis on Christian Apologetics–What the Christian Faith Is and Isn’t
This distinction, which is demanded by honesty, also gives the apologist a great tactical advantage. The great difficulty is to get modern audiences to realize that you are preaching Christianity solely and simply because you happen to think it true; they always suppose you are preaching it because you like it or think it good for society or something of that sort. Now a clearly maintained distinction between what the faith actually says and what you would like it to have said or what you understand or what you personally find helpful or think probable, forces your audience to realize that you are tied to your data just as the scientist is tied by the results of the experiments; that you are not just saying what you like. This immediately helps them to realize that what is being discussed is a question about objective fact–not gas about ideals and points of view.
Secondly, this scrupulous care to preserve the Christian message as something distinct from one’s own ideas, has one very good effect upon the apologist himself. It forces him, again and again, to face up to those elements in original Christianity which he personally finds obscure or repulsive, He is saved from the temptation to skip or slur or ignore what he finds disagreeable. And the man who yields to that temptation will, of course, never progress in Christian knowledge. For obviously the doctrines which one finds easy are the doctrines which give Christian sanction to truths you already knew. The new truth which you do not know and which you need must, in the very nature of things, be hidden precisely in the doctrine you least like and least understand. It is just the same here as in science. The phenomenon which is troublesome, which doesn’t fit in with the current scientific theories, is the phenomenon which compels reconsideration and thus leads to new knowledge, Science progresses because scientists, instead of running away from such troublesome phenomena or hushing them up, are constantly seeking them out. In the same way, there will be progress in Christian knowledge only as long as we accept the challenge of the difficult or repellent doctrines. A “liberal” Christianity which considers itself free to alter the faith whenever the faith looks perplexing or repellent must be completely stagnant, Progress is made only into a resisting material.
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