法華義疏 1.120

1.120

此經正明大事因緣，謂開佛知見。佛知見者所謂四智：如來智、佛智、自然智、無師智。以知聞無所聞則生如來智，無所聞而聞則生佛智，斯二任運現前名自然智，此三不從師得謂無師智。聞既生四智，諸有所作皆須精識因緣並生四智入佛知見也。

This sūtra specifically clarifies the one great matter of causes and conditions—namely, opening the Buddha's knowledge and vision. The Buddha's knowledge and vision consists of what are called the four wisdoms: Tathāgata-wisdom, Buddha-wisdom, spontaneous wisdom, and teacherless wisdom. Knowing that hearing is without anything heard gives rise to Tathāgata-wisdom; hearing where there is nothing heard gives rise to Buddha-wisdom; these two spontaneously appearing before one is called spontaneous wisdom; and these three not being obtained from a teacher is called teacherless wisdom. Since hearing gives rise to the four wisdoms, in all that one undertakes one must thoroughly discern causes and conditions and simultaneously give rise to the four wisdoms to enter the Buddha's knowledge and vision.