My question is related to the quote below taken from Chapter 29 of The Diamond Sutra. Can you provide any references for other explanations for this quote or can you provide your own explanation?
“Subhuti, if any person were to say that the Buddha is now coming or going, or sitting up or lying down, they would not have understood the principle I have been teaching. Why? Because while the expression ‘Buddha’ means ‘he who has thus come, thus gone,’ the true Buddha is never coming from anywhere or going anywhere. The name ‘Buddha’ is merely an expression, a figure of speech.”
As I understand from my current practise, there have been many instances I've been walking and I am aware that there is nowhere I'm walking to, and nowhere I'm walking from and no reference for somebody walking. I can then only discern beyond forms and see that there is only what I perceive to be a stillness in which there is neither time, distance and dimension. I don't know what is doing the perceiving in this instance or if anything at all is being perceived. If I am able to put this into a language there must be a perceiver beyond all forms or that my conceptual mind is doing this perceiving. In the latter case I would be being fooled by mental perceptions.
Out of curiosity and using consciously directed thought I experimented with this experience by watching a seagull flying through the air. Within several seconds I removed the earth and the rest of the universe. The seagull was bouncing its wings and orienting on the spot. From this I deduced that form provides dimension, distance and time. Without form the seagull cannot move from one position to another and time seems intrinsically bound to distance and dimension. That's as far as I got.
It may seem that I'm bordering on nihilism here, but on the contrary: there is the use of form to make the deeper discovery. Form seems to be the substrate to depth of knowledge but in this case it seems like I haven't learnt anything.