"As we apply brain dominance theory to the three essential roles of organizations, we see that the manager's role primarily would be left brain and the leader's role right brain. The producer's role would depend upon the nature of the work. If it's verbal, logical, analytical work, that would be essentially left brain; if it's more intuitive, emotional, or creative work, it would be right brain. People who are excellent managers but poor leaders may be extremely well organized and run a tight ship with superior systems and procedures and detailed job descriptions. But unless they are internally motivated, little gets done because there is no feeling, no heart; everything is too mechanical, too formal, too tight, too protective. A looser organization may work much better even though it may appear to an outsider observer to be disorganized and confused. Truly significant accomplishments may result simply because people share a common vision, purpose, or sense of mission,"  ~ Stephen Covey.