Dr. Daniel Starch asked 150 outstanding business leaders to list the traits they believed were responsible for their remarkable success. They put ability to think near the top. But hold on: everybody thinks—men, women, children, geniuses, the man in the street—followers, as well as leaders. Thinking is to a brain as breathing is to a lung. Neither is ever inactive, not even in sleep. You don’t teach a brain to think; it already does it, naturally.
Of course we don’t always think (or breathe) as well as we might.
~ James F. Bender, The Technique of Executive Leadership