"A machine has value only as it produces more than it consumes — so check your value to the community."
— Martin H. Fischer

January 1, 1970

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Added on April 10, 2026
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Non-fiction authors from the United StatesImmigrants to the United StatesPhysicians from GermanyNon-fiction authors from GermanyPhysicians from the United States
Original Language: English

Sources

As quoted in Quote Unquote (A Handbook of Quotations) (2005) by M. P. Singh, p. 86