[M]an's life of all lives is the most completely and fully bound to earth because life's experience, wholly earthly, is in man's case the most comple… - Charles Scott Sherrington

The brain is a mystery—it has been—and still will be. Not that we do not know many facts about it. The facts we know have indeed greatly multiplied in recent years, but they all fail to give us a key to the mystery of how it creates—if it does create—our thoughts and feelings; that is, said more concisely though less concretely, our mind.

Science is the fruit of patient toil, sifting out facts and in search of more facts. It has no tilt against religion as such. It knows its own field to be vast, but also knows it limited.

[A]s followers of natural science we know nothing of any relation between thoughts and the brain, except as a gross correlation in time and space.