QUESTION: How can a man with faith be a nonbeliever?

ANSWER: Certain people put faith in the doctrine of the universal existence of the Buddha-nature upon hearing it while still attaching themselves to the pre-Lotus sūtras (in which attainment of Buddhahood by all is not preached). Such people are infatuated with sūtras that do not preach the existence of the Buddha-nature in all people while believing the universal existence of the Buddha-nature. Thus, they are believers and nonbelievers at the same time.

Ken Hōbō-shō, A Clarificaton of Slandering the True Dharma, Writings of Nichiren Shōnin, Doctrine 3, Pages 135.