Question posed to Zen Master Hui Hai:
4. Q: According to the Vajra-body chapter of the Maha-parinirvana Sutra:
- ‘The (indestructible) diamond-body” is imperceptible, yet it clearly perceives;
- It is free from discerning and yet there is nothing which it does not comprehend.’
What does this mean?
A:
- It is imperceptible because its own nature is a formless’ substance’ which is intangible; hence it is called’ imperceptible’; And, since it is intangible, this ‘substance’ is observed to be profoundly still and neither vanishing nor appearing.
- Though not apart from our world, it cannot be influenced by the worldly stream. It is self-possessed and sovereign, which is the reason why it clearly perceives.
- It is free from discerning in that its own nature is formless and basically undifferentiated. Its comprehending every-thing means that the undifferentiated ‘substance’ is endowed with functions as countless as the sands of the Ganges; and, if all phenomena were to be discerned simultaneously, it would comprehend all of them without exception.
In the Prajna Gatha it is written:
- Prajna, unknowing, knows all,
- Prajna, unseeing, sees all.
The Zen Teaching of Instantaneous Awakening by Master Hui Hai, John Blofeld translation
Essence of Buddhism 
Thank you, the information you put in here is priceless. If today not many of us look for it, times are changing fast.
Cool that you like it! When times are changing, you can find that within you that does not change to ground yourself in.
I always wondered at the insight, at the inspiration – the amount of connection to Reality that the eastern lore possess. I always believed in the diamond metaphor