In this chapter I outline the fundamentals of Jungian psychological types, initially how and to what extent they were developed by Jung, and, second, how they were continued by his followers. The position of his followers concerning psychological typology, especially of those called "empirical post-Jungians," I try to assess critically by returning to Jung and his position with respect to the types. Furthermore, by analyzing the two attitudes (introversion and extraversion) as well as the four cognitive functions (thinking, feeling, sensation, and intuition) in the context of different legal professions I try to understand their specific role, particularities, advantages and disadvantages in legal business. Finally, I apply Jungian psychological typology to what I call (world) legal geography or comparative law, where I try to demonstrate how different (collective) psychological typologies have contributed to different legal systems and their peculiarities.