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With any hallucinations, if you can do functional brain imagery while they're going on, you will find that the parts of the brain usually involved in seeing or hearing - in perception - have become super active by themselves. And this is an autonomous activity; this does not happen with imagination.
Oliver Sacks -
I think hallucinations need to be discussed. There are all sorts of hallucinations, and then many sorts which are okay, like the ones I think which most of us have in bed at night before we fall asleep, when we can see all sorts of patterns or faces and scenes.
Oliver Sacks
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I feel I should be trying to complete my life, whatever 'completing a life' means.
Oliver Sacks -
Elements and birthdays have been intertwined for me since boyhood, when I learned about atomic numbers.
Oliver Sacks -
If a man has lost a leg or an eye, he knows he has lost a leg or an eye; but if he has lost a self - himself - he cannot know it, because he is no longer there to know it.
Oliver Sacks -
Lemurs are close to the ancestral stock from which all primates arose, and I am happy to think that one of my own ancestors, 50 million years ago, was a little tree-dwelling creature not so dissimilar to the lemurs of today. I love their leaping vitality, their inquisitive nature.
Oliver Sacks -
I was always the youngest boy in my class at high school. I have retained this feeling of being the youngest, even though now I am almost the oldest person I know.
Oliver Sacks -
In general, people are afraid to acknowledge hallucinations because they immediately see them as a sign of something awful happening to the brain, whereas in most cases they're not.
Oliver Sacks
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My own first love was biology. I spent a great part of my adolescence in the Natural History museum in London (and I still go to the Botanic Garden almost every day, and to the Zoo every Monday). The sense of diversity-of the wonder of innumerable forms of life-has always thrilled me beyond anything else.
Oliver Sacks -
I often feel that life is about to begin, only to realize it is almost over.
Oliver Sacks -
Temple is an intensely moral creature. She has a passionate sense of right and wrong, for example, in regard to the treatment of animals; and law, for her, is clearly not just the law of the land but, in some far deeper sense, a divine or cosmic law, whose violation can have disastrous effects-seeming breakdowns in the course of nature itself.
Oliver Sacks -
A spectacular anomaly came up with the hydrides of the nonmetals-an ugly bunch, about as inimical to life as one could get. Arsenic and antimony hydrides were very poisonous and smelly; silicon and phosphorous hydrides were spontaneously inflammable. I had made in my lab the hydrides of sulfur (H
Oliver Sacks -
When I was five, I am told, and asked what my favorite things in the world were, I answered, 'smoked salmon and Bach.' (Now, sixty years later, my answer would be the same.)
Oliver Sacks -
Hydrogen selenide, I decided, was perhaps the worst smell in the world. But hydrogen telluride came close, was also a smell from hell. An up-to-date hell, I decided, would have not just rivers of fiery brimstone, but lakes of boiling selenium and tellurium, too.
Oliver Sacks