Unreason and anti-intellectualism abominate thought. Thinking implies disagreement; and disagreement implies nonconformity; and nonconformity implies heresy; and heresy implies disloyalty — so, obviously, thinking must be stopped. But shouting is not a substitute for thinking and reason is not the subversion but the salvation of freedom.

Adlai Stevenson (1900-1965) American diplomat, statesman

Call to Greatness, ch. 3 “America’s Burden” (1954)
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Adapted from his "A Troubled World," Godkin Lectures, Harvard University (1954-03-17 - 1954-03-20)