- the thetan lives his life in segments: the largest segment is composed of spirals, as he goes through the mest universe, he is involved in a series of spirals each one less in terms of years, ordinarily, than the last. The length of this spiral might serve to indicate how much longer the thetan can continue. By a spiral would be meant a more or less continuous cycle of action. (HOM, p. 50)
- a term of lives, or a term of existences, or a single existence which bear an intimate relation, one to the other. (PDC 16)