Acerbic standup comedian and satirist George Carlin, whose staunch defense of free speech in his most famous routine “Seven Words You Can Never Say On Television” led to a key Supreme Court ruling on obscenity, has died. Carlin, went into St. John's Health Center in Santa Monica on Sunday afternoon complaining of chest pain and died later that evening, said his publicist, Jeff Abraham. He had performed as recently as last weekend at the Orleans Casino and Hotel in Las Vegas. He was 71. He was a genius and I will miss him dearly,” Jack Burns, who was the other half of a comedy duo with Carlin in the early 1960s, told The Associated Press. The actor Ben Stiller called Carlin “a hugely influential force in stand-up comedy. He had an amazing mind, and his humor was brave, and always challenging us to look at ourselves and question our belief systems, while being incredibly entertaining. He was one of the greats.” Carlin's jokes constantly breached the accepted boundaries of comedy and language, particularly with his routine on the “Seven Words” – all of which are taboo on broadcast TV and radio to this day. When he uttered all seven at a show in Milwaukee in 1972, he was arrested on charges of disturbing the peace, freed on $150 bail and exonerated when a Wisconsin judge dismissed the case, saying it was indecent but citing free speech and the lack of any disturbance. He is survived by wife Sally Wa and daughter Kelly Carlin McCall.