大乘起信論裂網疏 3.58

3.58

是故三界一切皆以（八識）心為自性，離（八識）心則無六塵境界。何以故？一切諸法以（第八）心為主，從（第七）妄念起，凡（八識）所分別，皆分別（八識）自心（所變相分），心不見心，無相可得。是故當知，一切世間境界之相，皆依眾生無明妄念而得建立。如鏡中像無體可得，唯從虛妄分別心轉。心生則種種法生，心滅則種種法滅故。

[Text of the treatise:] Therefore all things in the three realms have the mind (of the eight consciousnesses) as their intrinsic nature; apart from the mind (of the eight consciousnesses) there are no sense-objects of the six dusts. Why is this? All dharmas have the (eighth) mind as primary and arise from (the seventh's) false thought. Whatever is discriminated (by the eight consciousnesses) is only the discrimination of the (eight consciousnesses') own mind (the perceived parts transformed by them); the mind does not see the mind, and no mark can be apprehended. Therefore, one should know that all marks of worldly sense-objects are established based on the ignorance and false thoughts of sentient beings. Like an image in a mirror, they have no apprehensible essence, but only operate from the falsely discriminating mind: when the mind arises, various dharmas arise; when the mind ceases, various dharmas cease.