Some people are constructive, if you like. Others are destructive. It's this diversity in humankind that results in some making positive contribution… - Jonas Salk

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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 to make positive contributions to overcome the problems of each age.

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About Jonas Salk

Jonas Salk (October 28 1914 – June 23 1995) was a medical researcher and author, the inventor of the Salk vaccine against Polio, and the founder of the Salk Institute for Biological Studies.

Biography information from Wikiquote

Also Known As

Alternative Names: Jonas Edward Salk
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