The causes of the Great Depression are still far from certain. A lack of certainty, it may also be observed, is not evident in the contemporary writing on the subject. Much of it tells what went wrong and why with marked firmness. However, this paradoxically can itself be an indication of uncertainty. When people are least sure they are often most dogmatic.

John Kenneth Galbraith (1908-2006) Canadian-American economist, diplomat, author

The Great Crash, 1929, ch. 9 “Cause and Consequence,” sec. 3 (1954)
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