The greatest horrors in the history of mankind are not due to the ambition of the Napoleons or the vengeance of the Agamemnons, but to the doctrinaire philosophers. The theories of the sentimentalist Rousseau inspired the integrity of the passionless Robespierre. The cold-blooded calculations of Karl Marx led to the judicial and business-like operations of the Cheka.

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In the usual (though certainly not in every) public decision on economic policy, the choice is between courses that are almost equally good or equally bad. It is the narrowest decisions that are most ardently debated. If the world is lucky enough to enjoy peace, it may even one day make the discovery, to the horror of doctrinaire free-enterprisers and doctrinaire planners alike, that what is called capitalism and what is called socialism are both capable of working quite well.

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The American doctrinaire is the converse of the American demagogue, and, in this way, is scarcely less injurious to the public. The first deals in poetry, the last in cant. He is as much a visionary on one side, as the extreme theoretical democrat is a visionary on the other.

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A doctrinaire is a fool but an honest man.

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