The human brain is the thing that makes you who you are. I never get over my awe of the brain. When I open up — this week, I was doing a hemispherectomy on a child and looking at that brain. That’s an operation where we remove half the brain to stop intractable seizures. But, I’m saying, “This is the thing that makes this person who they are,” and if I were to expose my brain and expose your brain, and put them side by side, you wouldn’t be able to tell the difference and yet, we’re very, very different people, and no one can truly understand that.