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George Santayana, The Life of Reason, 1905 (оригинальная фраза):
Those who cannot remember the past are condemned to repeat it.

Winston Churchill, speech to the House of Commons, 1948 (перефразировал оригинал):
Those that fail to learn from history are doomed to repeat it.Или, следуя другому источнику:
Those who fail to learn from history are condemned to repeat it.