I don’t smoke pot, and I’m glad because then I can champion it without special pleading. The reason I don’t smoke it is because it facilitates ideas and heightens sensations—and I’ve got enough shit flying through my head without smoking pot.
At this time, ladies and gentlemen of the jury, the State will present its closing argument in the case against marijuana: It leads to the use of heroin and other dangerous, addictive drugs.
If this syllogism holds true, the bust-out junkie will say to his cellmate: ‘I am a heroin addict. I started smoking marijuana and then naturally I graduated to heroin. By the way, my cellmate, what happened to you? How did you come to murder three guys in a crap game? You’ve got blood on your hands. How did you first get obsessed with this terrible disease of gambling? Where did it all start?’
‘Oh, I started gambling with Bingo in the Catholic Church.’

Lenny Bruce, How To Talk Dirty and Influence People, 1965.