Nichiren Daishonin on interfaith

"But I, Nichiren, one man alone, declare that the recitation of the name of Amida Buddha is an action that leads to rebirth in the hell of incessant suffering, that the Zen school is the invention of the heavenly devil, that the True Word school is an evil doctrine that will destroy the country, and that the Precepts school and the observers of the precepts are traitors to the nation." -- Nichiren Daiishonin