Lo más importante fue para mí el reconocimiento, confirmado por todos mis experimentos con LSD, que lo que de común se denomina «realidad», incluida la realidad de la propia persona, de ningún modo es algo fijo, sino algo de múltiple significación, y que no existe una realidad, sino varias; cada una de ellas encierra una distinta conciencia del yo.

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.

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.

Reality is simply the loss of the ego. Destroy the ego by seeking its identity. Because ego is no entity it will automatically vanish and reality will shine forth by itself. This is the direct method, whereas all other methods are done, only retaining the ego. . . . No sadhanas [spiritual practices] are necessary for engaging in this quest.

Reality is simply the loss of ego. Destroy the ego by seeking its identity. Because the ego is no entity it will automatically vanish and reality will shine forth by itself.

This self-experiment showed that LSD-25 behaved as a psychoactive substance with extraordinary properties and potency. There was to my knowledge no other known substance that evoked such profound psychic effects in such extremely low doses, that caused such dramatic changes in human consciousness and our experience of the inner and outer world. What seemed even more significant was that I could remember the experience of LSD inebriation in every detail. This could only mean that the conscious recording function was not interrupted, even in the climax of the LSD experience, despite the profound breakdown of the normal world view. For the entire duration of the experiment, I had even been aware of participating in an experiment, but despite this recognition of my condition, I could not, with every exertion of my will, shake off the LSD world. Everything was experienced as completely real, as alarming reality; alarming, because the picture of the other, familiar everyday reality was still fully preserved in the memory for comparison. Another surprising aspect of LSD was its ability to produce such a far-reaching, powerful state of inebriation without leaving a hangover. Quite the contrary, on the day after the LSD experiment I felt myself to be, as already described, in excellent physical and mental condition. I was aware that LSD, a new active compound with such properties, would have to be of use in pharmacology, in neurology, and especially in psychiatry, and that it would attract the interest of concerned specialists. But at that time I had no inkling that the new substance would also come to be used beyond medical science, as an inebriant in the drug scene. Since my self-experiment had revealed LSD in its terrifying, demonic aspect, the last thing I could have expected was that this substance could ever find application as anything approaching a pleasure drug.

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.

I would say that in my scientific and philosophical work, my main concern has been with understanding the nature of reality in general and of consciousness in particular as a coherent whole, which is never static or complete but which is an unending process of movement and unfoldment...

Reality is being itself. — It is being itself, in becoming itself. Reality in its isness, the "isness" of a thing. Thus isness is the meaning — having freedom in its primary sense — not limited by attachments, confinements, partialization, complexities.

Reality, n. The dream of a mad philosopher.

Maybe each human being lives in a unique world, a private world different from those inhabited and experienced by all other humans. . . If reality differs from person to person, can we speak of reality singular, or shouldn't we really be talking about plural realities? And if there are plural realities, are some more true (more real) than others? What about the world of a schizophrenic? Maybe it's as real as our world. Maybe we cannot say that we are in touch with reality and he is not, but should instead say, His reality is so different from ours that he can't explain his to us, and we can't explain ours to him. The problem, then, is that if subjective worlds are experienced too differently, there occurs a breakdown in communication ... and there is the real illness.

In our daily lives we attend primarily to that which the senses are spelling out for us: to what the eyes perceive, to what the fingers touch. Reality to us is thinghood, consisting of substances that occupy space; even God is conceived by most of us as a thing. The result of our thinginess is our blindness to all reality that fails to identify itself as a thing, as a matter of fact.