"The first event, which looked back but also forward like a kind of historical hinge, was the centennial of the birth of Albert Hofmann, the Swiss chemist who, in 1943, accidentally found that he had discovered (five years earlier) the psychoactive molecule that came to be known as LSD. This was an unusual centennial in that the man being feted was very much in attendance. Entering his second century, Hofmann appeared in remarkably good shape, physically spry and mentally sharp, and he was able to take an active part in the festivities, which included a birthday ceremony followed by a three-day symposium. The symposium's opening ceremony was on January 13, two days after Hofmann's 100th birthday (he would live to be 102). Two thousand people packed the hall at the Basel Congress Center, rising to applaud as a stooped stick of a man in a dark suit and a necktie, barely five feet tall, slowly crossed the stage and took his seat. Two hundred journalists from around the world were in attendance, along with more than a thousand healers, seekers, mystics, psychiatrists, pharmacologists, consciousness researchers, and neuroscientists, most of them people whose lives had been profoundly altered by the remarkable molecule that this man had derived from a fungus half a century before. They had come to celebrate him and what his friend the Swiss poet and physician Walter Vogt called "the only joyous invention of the twentieth century."