Lectures on the Sūtra of the Collection of the Father and Son (Pitāputrasamāgamanasūtra) (187)

Buddhist practice is the cultivation of the deluded mind of the seven consciousnesses

To sum up, practice is the cultivation of the deluded mind of the seven consciousnesses. When the deluded mind is well cultivated and the mind attains tranquility (praśama), with no seeds of unwholesome karma remaining in the ālayavijñāna, one becomes a Buddha and can restore one's original face. At present, the karmic seeds contained in our ālayavijñāna are defiled and accompanied by ignorance; our mind of the seven consciousnesses has the afflictions of greed, hatred, and delusion, whereas the Buddha's mind of the seven consciousnesses is entirely tranquil, has already accomplished the transformation of consciousness into wisdom, and is completely free of self.