Oliver Sacks — British Scientist born on July 09, 1933, died on August 30, 2015

Oliver Wolf Sacks, CBE, FRCP was a British neurologist, naturalist and author who spent his professional life in the United States. He felt that the brain was the "most incredible thing in the universe" and therefore important to study. He became widely known for writing best-selling case histories about his patients' disorders, with some of his books adapted for film and stage... (wikipedia)

I often feel that life is about to begin, only to realize it is almost over.
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.
I feel I should be trying to complete my life, whatever 'completing a life' means.
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.
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.