But it wasn't David's brain that woke him up to say goodbye that Friday. His brain had already been destroyed. Tumor metastases don't simply occupy space and press on things, leaving a whole brain. The metastases actually replace tissue. Where that gray stuff grows, the brain is just not there.
What woke my patient that Friday was simply his mind, forcing its way through a broken brain, a father's final act to comfort his family. The mind is a uniquely personal domain of thought, dreams and countless other things, like the will, faith and hope. These fine things are as real as rocks and water but, like the mind, weightless and invisible, maybe even timeless. Material science shies from these things, calling them epiphenomena, programs running on a computer, tunes on a piano. This understanding can't be ignored; not too much seems to get done on earth without a physical brain. But I know this understanding is not complete, either.
I see the mind have its way all the time when physical realities challenge it. In a patient stubbornly working to rehab after surgery, in a child practicing an instrument or struggling to create, a mind or will, clearly separate, hovers under the machinery, forcing it toward a goal. It's wonderful to see, such tangible evidence of that fine thing's power over the mere clumps of particles that, however pretty, will eventually clump differently and vanish.