The Law of Causation, which is perfectly sound from the rational, ethical, and religious viewpoints and which has a universal validity enabling it to withstand any criticism, was formulated as a result of examination and criticism of all the other imperfect and irrational systems in India in Shakyamuni’s time. The Law of Causation teaches both the theoretical and practical application of the idea that there is no immortal, immutable self or soul.

The Law had never been taught in India before. It is the characteristic that sets Buddhism apart from other philosophies and religions. But though he discovered it, Shakyamuni did not create it.

This Law is an absolute truth—recognizable as true by all peoples, in all places, and at all times—existing eternally independent of the appearance in the world of a Tathagata (a term for a Buddha, Tathagata means one who has come the full Way, who has reached the truth and come to declare it). Shakyamuni merely discovered and taught the Law. (Page 29-30)