"I am a democrat because I believe that no man or group of men is good enough to be trusted with uncontrolled power over others. And the higher the pretensions of such power, the more dangerous I think it both to the rulers and to the subjects. Hence Theocracy is the worst of all governments. If we must have a tyrant a robber baron is far better than an inquisitor. The baron's cruelty may sometimes sleep, his cupidity at some point be sated, and since he dimly knows he is doing wrong he may possibly repent. But the inquisitor who mistakes his own cruelty and lust of power and fear for the voice of Heaven will torment us infinitely because he torments us with the approval of his own conscience and his better impulses appear to him as temptations. And since Theocracy is the worst, the nearer any government approaches to Theocracy the worse it will be. A metaphysic, held by the rulers with the force of a religion, is a bad sign. It forbids them, like the inquisitor, to admit any grain of truth or good in their opponents, it abrogates the ordinary rules of morality, and it gives a seemingly high, super-personal sanction to all the very ordinary human passions by which, like other men, the rulers will frequently be actuated. In other words, it forbids wholesome doubt. [...]"*
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"A Reply to Professor Haldane" (1946), published posthumously in Of Other Worlds: Essays and Stories (1966). Written in response to "Auld Hornie, F.R.S." by J. B. S. Haldane, a review of the Space Trilogy. ( Bold emphasis added.)
Clive Staples Lewis (29 November 1898 – 22 November 1963) was a British writer and lay theologian. | https://en.wikipedia.org/wiki/C._S._Lewis