Did not realize Feynman used meditation, isolation tanks, etc.!
"First I started out by investigating various ideas of mysticism, and mystic experiences. I went into isolation tanks and got many hours of hallucinations, so I know something about that. Then I went to Esalen, which is a hotbed of this kind of thought (it's a wonderful place; you should go visit there). Then I became overwhelmed. I didn't realize how much there was."
To be more precise, he used isolation tanks and not meditation (as far as I can tell, after reading his autobiography "Surely you're joking, Mr. Feynman", highly recommended).
He played around with lockpicking too. Outstanding dude.
"First I started out by investigating various ideas of mysticism, and mystic experiences. I went into isolation tanks and got many hours of hallucinations, so I know something about that. Then I went to Esalen, which is a hotbed of this kind of thought (it's a wonderful place; you should go visit there). Then I became overwhelmed. I didn't realize how much there was."