The beginnings of Nichiren’s eventual thinking concerning the daimoku are, however, already present in his Ichidai shōgyō taii (The cardinal meaning of the sacred teachings of the Buddha’s lifetime), written in 1258, which declares the Lotus Sūtra to be the Buddha’s ultimate teaching and the purpose of his advent in this world. In this work, Nichiren identifies the five characters of the daimoku, the “Wonderful Dharma,” with the “three thousand realms in one thought-moment” (ichinen sanzen), an identification that would be central to his later writings. The Ichidai shōgyō taii also foreshadows the importance Nichiren would place on the concept of the “three thousand realms in one thought-moment” as the foundation of his mature thought. Unlike the majority of medieval Tendai kuden texts, Nichiren took as his doctrinal basis not the threefold contemplation in a single mind, but the three thousand realms in a single thought-moment. While both concepts express the idea of a perfectly interpenetrating universe in which all dharmas simultaneously encompass one another, the “three thousand realms in one thought-moment” explicitly includes two component principles that Nichiren would draw upon in developing his thought. One is the mutual inclusion of the ten dharma realms (jikkai gogu), which Nichiren used to focus more diffuse notions of nonduality on the mutual encompassing of the Buddha realm and the nine realms of unenlightened beings. The other is the concept of the land (kokudo seken), which is nondual with and inseparable from the beings who inhabit it. This concept would be important to Nichiren for two reasons. First, it underlies his claim that the land itself can manifest Buddhahood, that is, that the pure land can be realized in the present world. Second, its implication that insentient forms can manifest Buddhahood provided the doctrinal basis for his use of a mandala as a honzon or object of worship. (Page 248-249)