"Marijuana should not only be legal, but it should be a local and cottage industry", the acclaimed suspense novelist said on one occasion. Some other times, he has clarified that he no longer smokes marijuana because he is afraid of the additives it is mixed with, as an outcome of drug trafficking.
(I found the above on-line, but that does not make it official - I guess you would have to ask the man himself!) - maybe Marsha Moderator knows the answer.
Maybe she does! It'd be cool if it's a true quote; his awesome factor would skyrocket!