Alan I. Leshner Quotes

• There is no such thing as recreational drug use.

  Alan I. Leshner

  Drug Use, Psychedelic, Recreational Drugs

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• Evolution is far more than a belief or an educated guess about how people came to be as they are. It is, in fact, the product of converging evidence from many, many different fields of science. Many, many thousands of studies that, in fact, have provided a theory, an organizing principal in fact, that describes how humans came to be.

  Alan I. Leshner

  People, Fields, Facts

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• Evolution is an organizing principle and when we call it a theory, we mean it's a theory, we don't mean that it's a belief that someone holds.

  Alan I. Leshner

  Mean, Principles, Belief

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