Regarding the sūtras, the Lotus Sūtra is the most supreme among all exoteric and esoteric teachings. Regarding the Buddhas, Śākyamuni Buddha is the most supreme among all the Buddhas in all the worlds throughout the universe. Regarding those who practice the faith, Nichiren is worthy of being a practicer of the Lotus Sūtra. When the “three treasures” in Buddhism (the Buddha, Dharma and Sangha) are aligned with one another, there can be no doubt that your most sincere hopes and wishes will be realized.
Niita-dono Gosho, A Letter to Lord Niita, Writings of Nichiren Shōnin, Volume 7, Followers II, Pages 106-107