LSD wanted to tell me something. … It gave me an inner joy, an open mindedness, a gratefulness, open eyes and an internal sensitivity for the miracles of creation.

I think that in human evolution it has never been as necessary to have this substance LSD … It is just a tool to turn us into what we are supposed to be.

LSD was an incredible experience. Not that I’m recommending it for anybody else; but for me it kind of – it hammered home to me that reality was not a fixed thing. That the reality that we saw about us every day was one reality, and a valid one – but that there were others, different perspectives where different things have meaning that were just as valid. That had a profound effect on me.

LSD lets you in on something. When you're tripping, the idea of race disappears; the idea of sex disappears; you don't even know what species you are sometimes. And I don't know of anybody who hasn't come back from that being more humane, more thoughtful, more understanding.

It was obvious that a substance with such fantastic effects on mental perception and on the experience of the outer and inner world would also arouse interest outside medical science, but I had not expected that LSD, with its unfathomably uncanny, profound effects, so unlike the character of a recreational drug, would ever find worldwide use as an inebriant. I had expected curiosity and interest on the part of artists outside of medicine — performers, painters, and writers — but not among people in general. After the scientific publications around the turn of the century on mescaline — which, as already mentioned, evokes psychic effects quite like those of LSD — the use of this compound remained confined to medicine and to experiments within artistic and literary circles. I had expected the same fate for LSD. And indeed, the first non-medicinal self-experiments with LSD were carried out by writers, painters, musicians, and other intellectuals.

"LSD reveals the whatness of things, their quiddity, their essence. The wateriness of water is suddenly revealed to you, the carpetness of carpets, the woodness of wood, the yellowness of yellow, the fingernailness of fingernails, the allness of all, the nothingness of all, the allness of nothing. For me music gives access to every one of these essences of existence, but at a fraction of the social or financial cost of a drug and without the need to cry "Wow!" all the time, which is one of LSD's most distressing and least endearing side-effects."

Drugs had changed me from a selfish, striving academic in search of recognition and power to someone who was aware of the soul. Psychedelics had introduced me to compassion, to recognizing and feeling love for others. Harvard seemed trivial by comparison.

When people ask me about LSD, I always make a point of telling them you can have the shit scared out of you with LSD because it exposes something, something hollow. Let’s say you have been getting on your knees and bowing and worshiping; suddenly, you take LSD and you look and there’s just a hole, there’s nothing there. The Catholic Church fills this hole with candles and flowers and litanies and opulence. The Protestant Church fills it with hand-wringing and pumped-up squeezing emotions because they can’t afford the flowers and the candles. The Jews fill this hole with weeping and browbeating and beseeching of the sky: How long, how long are you gonna treat us like this? The Muslims fill it with rigidity and guns and a militant ethos. But all of us know that’s not what is supposed to be in that hole. After I had been at Stanford two years, I was into LSD. I began to see that the books I thought were the true accounting books — my grades, how I’d done in other schools, how I’d performed at jobs, whether I had paid off my car or not — were not at all the true books. There were other books that were being kept, real books. In those real books is the real accounting of your life.

Deliberate provocation of mystical experience, particularly by LSD and related hallucinogens, in contrast to spontaneous visionary experiences, entails dangers that must not be underestimated. Practitioners must take into account the peculiar effects of these substances, namely their ability to influence our consciousness, the innermost essence of our being. The history of LSD to date amply demonstrates the catastrophic consequences that can ensue when its profound effect is misjudged and the substance is mistaken for a pleasure drug. Special internal and external advance preparations are required; with them, an LSD experiment can become a meaningful experience. Wrong and inappropriate use has caused LSD to become my problem child.

Wouldn't you like to see a positive LSD story on the news? To base your decision on information rather than scare tactics and superstition? Perhaps? Wouldn't that be interesting? Just for once? "Today, a young man on acid realized that all matter is merely energy condensed to a slow vibration – that we are all one consciousness experiencing itself subjectively. There is no such thing as death, life is only a dream, and we are the imagination of ourselves. Here's Tom with the weather."

What constitutes the essential, characteristic difference between everyday reality and the world picture experienced in LSD inebriation? Ego and the outer world are separated in the normal condition of consciousness, in everyday reality; one stands face-to-face with the outer world; it has become an object. In the LSD state the boundaries between the experiencing self and the outer world more or less disappear, depending on the depth of the inebriation. Feedback between receiver and sender takes place. A portion of the self overflows into the outer world, into objects, which begin to live, to have another, a deeper meaning. This can be perceived as a blessed, or as a demonic transformation imbued with terror, proceeding to a loss of the trusted ego. In an auspicious case, the new ego feels blissfully united with the objects of the outer world and consequently also with its fellow beings. This experience of deep oneness with the exterior world can even intensify to a feeling of the self being one with the universe. This condition of cosmic consciousness, which under favorable conditions can be evoked by LSD or by another hallucinogen from the group of Mexican sacred drugs, is analogous to spontaneous religious enlightenment, with the unio mystica. In both conditions, which often last only for a timeless moment, a reality is experienced that exposes a gleam of the transcendental reality, in which universe and self, sender and receiver, are one.

The characteristic property of hallucinogens, to suspend the boundaries between the experiencing self and the outer world in an ecstatic, emotional experience, makes it possible with their help, and after suitable internal and external preparation, as it was accomplished in a perfect way at Eleusis, to evoke a mystical experience according to plan, so to speak. Meditation is a preparation for the same goal that was aspired to and was attained in the Eleusinian Mysteries. Accordingly it seems feasible that in the future, with the help of LSD, the mystical vision, crowning meditation, could be made accessible to an increasing number of practitioners of meditation I see the true importance of LSD in the possibility of providing material aid to meditation aimed at the mystical experience of a deeper, comprehensive reality. Such a use accords entirely with the essence and working character of LSD as a sacred drug.

(How have psychedelics helped or harmed or influenced you?) LAH: I was deeply affected. They gave me a much wider view of the world, as well as a much wider view of our ignorance, and ignorance, according to the Buddha, is our basic difficulty. Psychedelics and the process of aging make that clear to me all the time.

LSD is a unique and powerful tool for the exploration of the human mind and human nature. Psychedelic experiences mediate access to deep realms of the psyche that have not yet been discovered and acknowledged by mainstream psychology and psychiatry. They also reveal new possibilities and mechanisms of therapeutic change and personality transformation.