The central beliefs of Scientology are that:
* a person is an immortal spiritual being (termed a thetan) who possesses a mind and a body, accompanied by a lesser "genetic entity";
* the thetan has lived through many past lives (called the "whole track"), stored memories from which can cause problems in the present day;
* a person is basically good, but is "aberrated" by the memories of past traumas.
The Church states that the goal of Scientology is a world without war, criminals, and insanity, where good decent people have the freedom to reach their goals. In Dianetics, Hubbard proposed that the cause of "aberrations" in the human mind was the accumulated unconscious memories of traumatic incidents and guilty feelings dating back, in some cases, to before the moment of birth. He extended this view further in Scientology, declaring that thetans have existed for tens of trillions of years. During that time, they have been exposed to vast numbers of traumatic incidents.
Another basic tenet of Scientology is that there are three interrelated (and intrinsically spiritual) components that are the very makeup of successful "livingness": affinity, reality (or agreement), and communication, which equate to understanding. Hubbard called this the "ARC triangle". Scientologists utilize ARC as a central organizing principle in their lives, primarily based upon the belief that raising one aspect of the triangle increases the other two.
Scientology claims to offer an exact methodology to help a person achieve spiritual and ethical education, awareness, and improvement, so that he or she may achieve a level of spiritual purity as well as greater effectiveness in the physical world. The ultimate goal of Scientology is to "rehabilitate" the thetan, restoring its superhuman abilities to control "matter, energy, space and time"