Dr. Pennfield was a highly respected brain surgeon. He taught and practiced at McGill, University in Montreal. I read one of his books entitled "The Mystery of the Mind". It is a fascinating book. He talks about the brain which is material that we can see and then mind which we cannot see. In the mind aspect he explores the existence of spiritualism. Here is a video where he is operating on one of his patients, who is actually his sister:
The quality of the video is not very good but it is worth watching. I recommend his book, The Mystery of the Mind, to my readers.
Here is an interesting quote by Dr. Pennfield:
"I realized that there was a thrilling undiscovered country to be explored in the mechanisms of the mammalian nervous system. Through it, one might approach the mystery of the mind..."
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