He caught a glimpse of that extraordinary faculty in man, that strange, altruistic, rare, and obstinate decency which will make writers or scientists maintain their truths at the risk of death. Upper is move, Galileo was to say; it moves all the same. They were to be in a position to burn him if he would go on with it, with his preposterous nonsense about the earth moving round the sun, but he was to continue with the sublime assertion because there was something which he valued more than himself. The Truth. To recognize and to acknowledge What Is. That was the thing which man could do, which his English could do, his beloved, his sleeping, his now defenceless English. They might be stupid, ferocious, unpolitical, almost hopeless. But here and there, oh so seldom, oh so rare, oh so glorious, there were those all the same who would face the rack, the executioner, and even utter extinction, in the cause of something greater than themselves. Truth, that strange thing, the jest of Pilate's. Many stupid young men had thought they were dying for it, and many would continue to die for it, perhaps for a thousand years. They did not have to be right about their truth, as Galileo was to be. It was enough that they, the few and martyred, should establish a greatness, a thing above the sum of all they ignorantly had.

The Book of Merlyn: The Unpublished Conclusion to The Once & Future King