I had wonderful visions. I sat down at home on the divan and started to dream. What I was thinking appeared in colors and in pictures. It lasted for a couple of hours and then it disappeared.

What began as a miracle substance subsequently became a youth cult drug, and thus a political danger for America. The decision of the U.S. to ban LSD was purely political. Every doctor has controlled access to heroin, morphine and even strychnine. But for LSD there's a total prohibition.

Before LSD got onto the streets (in the 1960s), we were able to gather a lot of therapeutic experiences. The substance was used in the psychoanalysis of patients who couldn't be talked to.

This is a wonderful birthday party we are having. One could say it is a consciousness-expanding experience without LSD.

I thought I would increase very cautiously the quantity of LSD in subsequent experiments to see if any of the dosages were active. It turned out that when I ingested this quarter of a milligram, I had taken a very strong, a very high dosage of a very, very active compound. I got into a strange state of consciousness.

At the beginning of the 1960s, here in the United States, LSD became a drug of abuse. In a short time, this wave of popular use swept the country and it became drug number one. It was then used incautiously and people were not prepared and informed about its deep effects. And then all kinds of things happened, which caused LSD to become an infamous drug. It was a troublesome time! Telephones, panic, and alarm!