It is true that whatever is heresy in the one is orthodoxy in the other, and that a man who is persecuted in either, if he can escape into the other, is welcomed as a hero. They are, however, at one in upholding the doctrine of the Inquisition, that the way to promote truth is to state, once for all, what is true, and then to punish those who disagree.
Source: Religion and Science, 1935, chapt. 10: Conclusion
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