For millennia, man has attempted to assess his place in this material world. How should he relate to the rest of life, and to his fellows? What are his true responsibilities, and to whom? Definitive answers were not forthcoming, not from the ancient Greeks, nor from the materialist thinkers of recent times. And so it remained until L. Ron Hubbard realised his long sought-after goal: the discovery of a unifying principle that applied to all life, a common denominator by which all men and, indeed, all life, might be understood. From this came a flood of discoveries that cast new light on the nature of man and life. The principles in this chapter solve the ancient moral dilemma of right and wrong and bring about a new level of rationality. With them, one can now align the various factors of existence, invariably make the right decisions when faced with choices and achieve a new perspective on the directions available in his life. Mr. Hubbard expanded upon these principles in numerous other writings and lectures. But what follows represents the essence of the subject and a practical approach to living successfully used by millions.