I generally regard thinking about consciousness, unfortunately, a thing of madness. "I think consciousness will remain a mystery. Yes, that's what I tend to be

I generally regard thinking about consciousness, unfortunately, a thing of madness. "I think consciousness will remain a mystery. Yes, that's what I tend to believe... I tend to think that the workings of the conscious brain will be elucidated to a large extent. Biologists and perhaps physicists will understand much better how the brain works. But why something that we call consciousness goes with those workings, I think that will remain mysterious." - Ed Witten, probably the greatest living physicist