“Dreams are associated with a state called REM sleep, the abbreviation standing for rapid eye movement. The REM state is strongly correlated with sexual arousal. Experiments have been performed in which sleeping subjects are awakened whenever REM state emerges, while members of a control group are awakened just as often each night but not when they're dreaming. After some days, the control group is a little groggy, but the experimental group - the ones who are prevented from dreaming - is hallucinating in daytime. It's not that a few people with a particular abnormality can be made to hallucinate in this way; anyone is capable of hallucinations.”

“When I was in school I studied biology. I learned that in making their experiments scientists will take some group--bacteria, mice, people--and subject that group to certain conditions. They compare the results with a second group which has not been disturbed. This second group is called the control group. It is the control group which enables the scientist gauge the effect of his experiment. To judge the significance of what has occurred. In history there are no control groups. There is no one to tell us what might have been. We weep over the might have been, but there is no might have been. There never was. It is supposed to be true that those who o not know history are condemned to repeat it. I don't believe knowing can save us. What is constant in history is greed and foolishness and a love of blood and this is a thing that even God--who knows all that can be known--seems powerless to change.”

“The Yale anthropologist Weston La Barre goes far as to argue that `a surprisingly good case could be made that much of culture is hallucination` and that `the whole intent and function of ritual appears to be... a group wish to hallucinate reality`.”

“I never sleep. Like the dolphin and the spiny anteater, I don't experience REM. Unlike the dreamless mammals, I'm a construct. I am a living program inside a vast network of electronic impulses known as the LINK. In that datastream I've uncovered the meaning of another kind of dreaming--that of a fond hope or aspiration, a yearning, a desire, or a passion. This much I have. When I dream, I dream of Mecca.”

“I've come to think of consciousness as a continuum of states, from fully awake cogitation to daydreaming to the altered consciousness of hallucinations and dreams. Still, interpreting dreams can only take place when we're awake. I believe meaning is what the mind makes and wants. It's essential to perception and to consciousness in all its forms. But the important meanings of psychotherapy are subjective. There's a lot of research that confirms that drem content reflects the dreamer's emotional conflicts.”

“Is there any way to be sure that your whole life has not been a dream? I don't think that there is. Typically we call some experiences "dreams" and others "reality" by contrasting them. Experiences that we call "real" are consistent and predictable. For example, people don't just get up and fly away in "real life" while they sometimes do in dreams. And it is not unusual for the experiences we have in dreams to jump around from one time and place to another, while those events we call "real" do not. But if your whole life has been a dream, then there is nothing to contrast these experiences with. In this case, the "dreams" that you recall each night are just dreams within the dream. And that contrast still holds. Even if your whole life has been a dream you could distinguish your nightly dreams from your "waking experiences" much of the time. But how do you know that you are not in Neo's predicament- that even your waking experiences are simply more dreams- just more predictable ones? Morpheus's suggestion seems correct. If you have never awakened from the dream to see what "real life" is actually like, you would have absolutely no way to discern that you are dreaming.”