Crawford Greenewalt

Crawford Hallock Greenewalt (16 August 1902 – 28 September 1993) was an American chemical engineer who served as president of the DuPont Company from 1948 to 1962 and as board chairman from 1962 to 1967.

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• For many things we can find substitutes, but there is not now, nor will there ever be, a substitute for creative thought.
  • in Chemical and Engineering News, November 10, 1952, as quoted by Alan Tower Waterman in Research for National Defense, in the Bulletin of the Atomic Scientists (March 1953), Vol. 9, No. 2,ISSN 0096-3402, published by Educational Foundation for Nuclear Science, Inc., p. 39.