Reuters quote of the day, May 5

London, May 4 (Reuters) Following is a notable quote from history.

''The knowledge that makes us cherish innocence makes innocence unattainable.'' -- U S writer Irving Howe, as quoted by Louis Mumford in ''The City in History''. Howe, best known for ''World of Our Fathers'', a study of east European Jewish immigrants in the United States, died on May 5, 1993.

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