Finally, there it was, looking just like the images I’d seen in a book the night before, but as I stood there, my own brain inches from Mr. Sanchez’s, I felt a sense of awe. Everything that made this man himself — his personality, his memories, his experiences, his likes and dislikes, his loves and losses, his knowledge and abilities — was contained in this three-pound organ. You lose a leg or a kidney, you’re still you, but lose a part of your brain — literally, lose your mind — and who are you then?
