Interesting book about psychedelics, 'Breaking Open the Head', Daniel Pinchbeck. You won't be able to put it down once you start reading it. He has an interesting point of view and is a formidable writer, so it's really delightful. .
From the book:
I asked the spirits to show me Shakespeare. They said, "okay" (they are not always so accomodating). He was a magical being of great size and power, made of energy. There were a million spirits in the form of fizzy colored lights dancing around him, like tiny Japanese lanterns or candleflames, helping him as he wrote, his pen scrawling across the quantum Void. James Joyce was there as well - he was like a little pendant resting on Shakespeare's desk. I recognized that part of the artist's spirit went directly into their creations. Their spiritual power depended on the earthbound public's continued desire for their work. That is the deeper meaning of the artist's quest for immortality."
http://www.breakingopenthehead.com/read_the_book_phantasticum.htm
About the author:
Daniel Pinchbeck has written features for The New York Times Magazine, Esquire, Wired, Harper's Bazaar, The Village Voice, Salon, and many other publications. He is one of the founders of Open City, an art and literary journal, and an independent book publisher. He was a 1999 - 2000 Fellow of the National Arts Journalism Program at Columbia University. He has also been a columnist for The Art Newspaper of London, and an editor at Connoisseur Magazine. Born in 1966, he grew up in New York City, where his father, Peter Pinchbeck, was an abstract painter. His mother, Joyce Johnson, was part of the Beat Generation in the 1950s. She is the author of several books, including Minor Characters, a memoir. He went to Wesleyan University in Middletown, Connecticut, then worked as a magazine editor and journalist,
In the late 1990s, after years of working in the media, Pinchbeck fell into the classic existential or spiritual crisis. Life seemed to have no point or transcendent meaning. He began to feel as if he was already dead, a ghost walking around the streets of Manhattan.
http://www.breakingopenthehead.com/about_the_author.htm