Diamond Sutra
Chapter 7
The Lord Buddha addressed Subhuti, saying: “What think you? Has the Lord Buddha really attained to supreme spiritual wisdom? Or has he a system of doctrine which can be specifically formulated?”
Subhuti replied, saying: “As I understand the meaning of the Lord Buddha’s discourse, he has no system of doctrine which can be specifically formulated; nor can the Lord Buddha express, in explicit terms, a form of knowledge which can be described as supreme spiritual wisdom. And why? Because, what the Lord Buddha adumbrated in terms of the Law, is transcendental and inexpressible. Being a purely spiritual concept, it is neither consonant with Law, nor synonymous with anything apart from the Law. Thus is exemplified the manner by which wise disciples and holy Buddhas, regarding intuition as the Law of their minds, severally attained to different planes of spiritual wisdom.”