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Daniel Quillen
American mathematician (1940–2011).
Born June 22nd, 1940 in Orange. [ref]
Died April 30th, 2011 at 70 years old in San Francisco (Alzheimer's disease).
Occupations
mathematician, topologist, university teacher
Wikipedia
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Try as much as possible to be wholly alive with all your might, and when you laugh, laugh like hell. And when you get angry, get good and angry. Try to be alive. You will be dead soon enough. William Saroyan