My plea to educators and parents is that they should give some thought to the nature of the brain of a child, for the brain is a living mechanism, not a machine. In case of breakdown, it can substitute one of its parts for the function of another. But it has its limitations. It is subject to inexorable change with the passage of time.

The brain has not explained the mind fully.

Among the millions of nerve cells that clothe parts of the brain there runs a thread. It is the thread of time, the thread that has run through each succeeding wakeful hour of the individual.

I realized that there was a thrilling undiscovered country to be explored in the mechanisms of the mammalian nervous system. Through it, one might approach the mystery of the mind.

The problem of neurology is to understand man himself.

Brain surgery is a terrible profession. If I did not feel it will become different in my lifetime, I should hate it.

It is fair to say that science provides no method of controlling the mind. Scientific work on the brain does not explain the mind-not yet.