Edward Witten is regarded with awe by his fellow physicists, some of whom have compared him to Einstein and Newton. He is largely responsible for the popularity of string theory over the past several decades. String theory holds that all of nature’s forces stem from infinitesimal particles wriggling in a hyperspace consisting of many extra dimensions. He has opponents to his belief but here is what he has to say.

Edward Witten’s thoughts on consciousness:

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. I have a much easier time imagining how we understand the Big Bang than I have imagining how we can understand consciousness… 

John Horan’s thoughts on consciousness:

The end of science really is the end of the search for final causation. In that sense not just consciousness but many aspects of the world may always remain a mystery. Whether that is emotionally pleasing or disconcerting is an individual choice that each one of us has to make.

John Horgan Scientific America