The thing that really is trying to tyrannise through government is Science. The thing that really does use the secular arm is Science. And the creed that really is levying tithes and capturing schools, the creed that really is enforced by fine and imprisonment, the creed that really is proclaimed not in sermons but in statutes, and spread not by pilgrims but by policemen—that creed is the great but disputed system of thought which began with Evolution and has ended in Eugenics. Materialism is really our established Church; for the Government will really help it to persecute its heretics. Vaccination, in its hundred years of experiment, has been disputed almost as much as baptism in its approximate two thousand. But it seems quite natural to our politicians to enforce vaccination; and it would seem to them madness to enforce baptism.
I am not frightened of the word “persecution” when it is attributed to the churches; nor is it in the least as a term of reproach that I attribute it to the men of science. It is as a term of legal fact. If it means the imposition by the police of a widely disputed theory, incapable of final proof—then our priests are not now persecuting, but our doctors are. The imposition of such dogmas constitutes a State Church—in an older and stronger sense than any that can be applied to any supernatural Church to-day. There are still places where the religious minority is forbidden to assemble or to teach in this way or that; and yet more where it is excluded from this or that public post. But I cannot now recall any place where it is compelled by the criminal law to go through the rite of the official religion. Even the Young Turks did not insist on all Macedonians being circumcised.
Now here we find ourselves confronted with an amazing fact. When, in the past, opinions so arguable have been enforced by State violence, it has been at the instigation of fanatics who held them for fixed and flaming certainties. If truths could not be evaded by their enemies, neither could they be altered even by their friends. But what are the certain truths that the secular arm must now lift the sword to enforce? Why, they are that very mass of bottomless questions and bewildered answers that we have been studying in the last chapters—questions whose only interest is that they are trackless and mysterious; answers whose only glory is that they are tentative and new. The devotee boasted that he would never abandon the faith; and therefore he persecuted for the faith. But the doctor of science actually boasts that he will always abandon a hypothesis; and yet he persecutes for the hypothesis. The Inquisitor violently enforced his creed, because it was unchangeable. The savant enforces it violently because he may change it the next day.
Chesterton, G. K. (Gilbert Keith). Eugenics and Other Evils, Chapter 7, Kindle Edition.
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