2. Stephen Jay Gould
Named a “Living Legend” by the U.S. Library of Congress in 2000, Stephen Ray Gould was a paleontologist, evolutionary biologist and historian of science credited with bringing evolution to a national audience, becoming heavily involved in pop culture through the ’80s and ’90s. And he was one of the smartest pot smokers who ever lived.
Gould began smoking marijuana after being diagnosed with incurable abdominal mesothelioma; with a diagnosis of eight months left to live, he made it another 20 years and became a big advocate of medical marijuana and ending the global drug war.