That which is not extended in space can have no perceptual existence, for the concept of 'existing' denotes and requires spatial extension.
That is the explanation of Hui Neng's statement: 'From the beginning not a thing is', i.e. 'No "thing" has ever existed', for there has never been such a thing as 'space' other than as a concept in mind (which we are) which renders possible the notion of appearance.
Note:
It should hardly be necessary to treat of Space independently of Time, for they are not separate - Time, as we have seen, being a spatial concept interpreted as duration. Therefore what has been said regarding Time is applicable to Space and only requires the necessary verbal adjustment. It may be said that whereas treating the space-concept directly is more radical, treating it via the time-concept may be an approach more readily appreciated. Ultimately the concept whose demolition must result in understanding is that which is known as 'Space-time'.
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Nothing could be more obviously imagined than 'space' and 'time', yet people assume them to be permanent and objective realities! Basic they may be, but as the basis of an elaborate dimensional fiction.
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