George Harrison on his first LSD trip

"The first time we, John and I, had LSD was when we were having dinner with our dentist. He slipped it into our coffee. We didn't know what it was. We didn't ask for it, but we did say, 'Thank you.'

"It was like I had never tasted, smelled or heard anything before. For me, it was like a flash. It just opened up something inside of me, and I realised a lot of very heavy things. From that moment on, I wanted to have that depth and clarity of perception."