“Some people are constructive, if you like. Others are destructive. It's this diversity in humankind that results in some making positive contributions and some negative contributions. It's necessary to have enough who make positive contributions to overcome the problems of each age.”

—  Jonas Salk

Academy of Achievement interview (1991)

Adopted from Wikiquote. Last update June 3, 2021. History

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Jonas Salk 47
Inventor of polio vaccine 1914–1995

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