Pre-Lotus sūtras expound on such topics as the bodies and minds of people. They were expounded according to the wishes of the people. Although they are the Buddha’s teachings, they are nothing but people’s minds, therefore, they were called “sūtras preached according to others’ minds.” Suppose parents who had an aversion to alcohol had a son who loved to drink liquor. Because of their love for their son and also to cater to his whim, they made it a point to offer him alcohol, pretending that they also were drinkers of liquor. The hopeless son then assumed that his parents truly loved alcohol. Sūtras preached according to others’ minds are the same.
The Daii Sūtra expounds on issues regarding human and heavenly beings. The Āgama sūtras expound on the Two Vehicles (śrāvaka and pratyekabuddha). The Flower Garland Sūtra expounds on bodhisattvas. The Hōdō sūtras and the Wisdom Sūtra are similar to the Āgama sūtras and the Daii Sūtra, but they are also similar to the Flower Garland Sūtra. If unenlightened people in the Latter Age of Degeneration read these sūtras, they may think that these are in accordance to the Buddha’s wish. Strictly speaking, however, they read sūtras that reflect their own minds. Their minds are originally inept to such an extent that nothing is satisfactory.
Zui-jii Gosho, The Sūtra Preached in Accordance to [the Buddha’s] Own Mind, Writings of Nichiren Shōnin, Faith and Practice, Volume 4, Page 154-155