To understand a religion like Scientology it is necessary to evaluate very diverse aspects, such as those indicated by modern experts on this subject (see Bryan Wilson: The Social Dimension of Sectarianism, 1990, and Eileen Barker: New Religious Movements: A Perspective to Understand Society, 1990). Among the many possible approaches, I have selected what could be an objective and scientific view of the matter based on the aspects which I will enumerate here:

1) The philosophical and doctrinal aspect. In this I include the complete body of beliefs, scriptures and doctrines which hold the three fundamental parts of religious knowledge: the Supreme Being, Man and Life.