Albert Hofmann (11 January 1906 – 29 April 2008) was a Swiss chemist known best for being the first known person to synthesize, ingest, and learn of the psychedelic effects of lysergic acid diethylamide (LSD). Hofmann was also the first person to isolate, synthesize, and name the principal psychedelic mushroom compounds psilocybin and psilocin. He authored more than 100 scientific articles and numerous books, including LSD: Mein Sorgenkind (LSD: My Problem Child). In 2007, he shared first place with Tim Berners-Lee in a list of the 100 greatest living geniuses, published by The Daily Telegraph newspaper.