It's very frustrating if you've never had an experience and somebody comes up to you and says, "I've just been on a flying saucer." Your tendency is to think, "Oh, this guy must be wacko, nuts, having an hallucination. None of that can be true because none of that has ever happened to me."

The most common way people could do time-travel would be a form of meditation in which you don't get caught up in your thoughts and don't make patterns of logical consequences follow as a result of your thinking process. It's very hard for most of us to do that if we think about it. But if you start to watch the process by which things come into being, and you begin to witness from the point of view of watching the words form, then you're beginning to move into the non-temporal mindset, or that which is free of time.

A lot of things occurred to me with shamans in Peru.There were a number of different kinds of experiences that you learn from doing ritual and taking ayahuasca [a common tropical forest hallucinogen] is the key to understanding the native consciousness and perception of the world with the Peruvian shamans that you wouldn't get unless you had been with them, but every shamanic tradition, including the Native American tradition of medicine and cleansing ritual, like the Sun Dance or the sweat lodge.

In very subtle ways, how we regard ourselves and others continually changes us into something new.

We find that alchemy has to do with magicians or magic and may even have roots in the Chaldean people who lived in the land that we now call Iraq.Abraham emerged and took a flock of people with him into Egypt. They were later called the Hebrews because of the valleys that they came out of. The alchemy that they saw was a transformative power within the individuals to affect the "out there" reality - and that, of course, is the basis of shamanism and is the basis for most magical and so-called Third World belief systems.

I describe the variety of different kinds of experiences I had, from seeing into the future to being inside the body of a bird and feeling the bird consciousness, to being in a plane of existence with beings that do not exist on this planet at all. And I described my experiences to shamans who started to laugh, saying, "Oh, we know those guys."

There is an ability to move and transform things. I think each human being has that power, and it's often one that we are willing to relinquish to others.