 
  "All those who keep faith in the Lotus Sutra are most certainly Buddhas, and one who slanders a Buddha commits a grave offense." 
 
From Gosho "The Fourteen Slanders" (The Writings of Nichiren Daishonin Volume I, page 756)
From Gosho "The Fourteen Slanders" (The Writings of Nichiren Daishonin Volume I, page 756)
