I'm still skeptical. I suspect meditation can give something similar, but not the same, as something like heroin, just like running can get you a "runner's high". But the brain just can't produce arbitrary chemical formulas.
"The serious heroin aficionado, if still functional, lives his junkie life surrounded by poor dumb muggles who believe they're getting "high on life." Bullshit! High is spelled heroin. Your muggle can't even imagine high. It's like trying to explain electricity to a blind man."
I think, in the context he's saying meditation and drugs are similar, they're referring to psychedelics and their ability to blur reality and perceptions.
Heroin is a whole other animal, I'm not sure you're going to find many people comparing it to meditation.
A fun passage from http://unqualified-reservations.blogspot.com/2011/07/dispatc...
"The serious heroin aficionado, if still functional, lives his junkie life surrounded by poor dumb muggles who believe they're getting "high on life." Bullshit! High is spelled heroin. Your muggle can't even imagine high. It's like trying to explain electricity to a blind man."