Fours are chiefly concerned with being special-unique and avoid at all costs being ordinary. They alternate between melancholy and elated gaiety. Their primary defense is envy and their fundamental issue is identity, with an almost compulsive and unrelenting concern with themselves or who they are. Their intelligence is centered in the heart. Their most comfortable style of being is feeling.
Fives are chiefly con cerned with the accumulation of knowledge.
They avoid stupidity and social involvement through isolation and avoid a sense of emptiness through thinking. Their primary defenses are isolation, analyzing, and formulating. Their fundamental issue is fear of involvement and emotions, their most comfortable style of being is thinking and their center of intelligence is the head. 6 is the Skeptic-Perfectionist. Sixes are more comfortable when invisible in someway.