George MacGinitie

"There are approximately two billion cells in the nervous system of a human being. The process of thinking in any individual is partly dependent upon the variable arrangement of these cells. Therefore no person can think exactly as another, any more than he can change his facial features to duplicate the facial features of another. If people would remember this fact and regulate their attitudes towards others to conform to it, it would encourage the exercise of tolerance, the human attribute most needed today."