Extraterrestrial

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According to his biographer, Carl Sagan kept it quiet...



http://froogle.google.com/froogle?hl=en&lr=&q=Carl%20Sagan%3A%20A%20Life&btnG=Search&...

Many things are revealed in the biographies that were not known outside a close circle of friends. For much of his adult life, Sagan used marijuana and believed that it gave him many of his best ideas. http://news.bbc.co.uk/1/hi/sci/tech/475954.stm

Carl Sagan was an avid user of marijuana, although he never publicly admitted it during his life. Under the pseudonym "Mr. X," he wrote an essay concerning cannabis smoking in the 1971 book Marihuana Reconsidered, whose editor was Lester Grinspoon[4]. In his essay, Sagan commented that marijuana encouraged some of his works and enhanced experiences[4]. After Sagan's death, Grinspoon disclosed this to Sagan's biographer, Keay Davidson[5]. When the biography, entitled Carl Sagan: A Life, was published in 1999, the marijuana exposure stirred some media attention[6]. http://en.wikipedia.org/wiki/Carl_Sagan