Your mind is the source of all these myriad, illusion-like, wondrous appearances on Emptiness.
Your mind is also what begins to discriminate based on name-and-form, and gets stuck in ignorant ideas.
By making no-mind your mind, you return to the source, which is empty and free.
By trying to grasp mind with mind, you sink yourself deeper into thought-discriminations and come to believe more in concepts than in the inherently liberated thusness- reality.
That is why Mumon says that the ego-soul is the seed of life and death. The ego soul is the "user-illusion" of ignorant thinking.
Thusness reality is seeing, hearing, &c. before these are objectified. Also walking, sitting down, eating, &c before one layers on ideas and thoughts.
In no-mind, it is all the direct clear functioning of the mysterious essence, empty and direct, therefore the real and true Dharma!
