If Ichinen Sanzen is the theory of the interpenetration of the universal (the Three Thousand Worlds) and the particular (in a single moment of thought), then the Eternal Shakyamuni Buddha is the concrete actualization of this theory. The Eternal Shakyamuni Buddha is not at all a transcendent, theistic savior, but the living proof that the Wonderful Dharma is the true nature of our lives and not just a cold abstraction or an unattainable ideal. With this in mind, Nichiren Shonin insisted that the Eternal Shakyamuni Buddha alone should be the true Focus of Devotion.