But, if we are not careful, we shall see thousands turning in this tribulation to the Enemy, while tens of thousands who do not go so far as that will nevertheless have their attention diverted from themselves to values and causes which they believe to be higher than the self. I know that the Enemy disapproves many of these causes. But that is where He is so unfair. He often makes prizes of humans who have given their lives for causes He thinks bad on the monstrously sophistical ground that the humans thought them good and were following the best they knew.
CS Lewis, The Screwtape Letters