"If you want to find out anything from the theoretical physicists about the methods they use, I advise you to stick closely to one principle: don't listen to their words, fix your attention on their deeds. To him who is a discoverer in this field the products of his imagination appear so necessary and natural that he regards them, and would like to have them regarded by others, not as creations of thought but as given realities."

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He laid it on George, me and our wives without telling us at a dinner party at his house. He was a friend of George's, and our dentist at the time. He just put it in our coffee or something. He didn't know what it was, it was just, 'It's all the thing,' with the middle-class London swingers. They had all heard about it and didn't know it was different from pot or pills. And they gave it to us, and he was saying, 'I advise you not to leave,' and we thought he was trying to keep us for an orgy in his house and we didn't want to know.

— John Lennon