‘None of the things that fill our lives is by itself false. It is only our conceptualization and attachment that make them false. Meanwhile, the perfection of wisdom transforms these obstacles into aids to enlightenment… Buddha likened his teachings to a raft, and told Subhuti to let go of all teachings, all dharmas as well as no dharmas. Just as the no dharma of emptiness must be put aside, the dharma of prajna must also be left behind, lest it become a new obstruction or attachment. Thus, such a teaching not only transcends the world of language, it also transcends itself. No other teaching is so self-effacing and yet so sure of itself. It is self-effacing because it asserts nothing. And it is sure of itself because it asserts nothing. It frees us of all assertions and opens the door to all knowledge. This is why it is called the “perfection of wisdom.”‘ (Commentary on the Diamond Sutra)
This is the crux of the teaching, beautifully articulated. Writing it out, I thought of the koan of the seamless monument. And yet, we have to take care, because of our human predilection for conceptual distinction, not to grasp the knowledge that the door opens us onto, and be trapped there.