I am reading this book:http://www.buddhanet.net/pdf_file/buddh ... gsurw6.pdf
If Nibbāna is nothingness, then it necessarily must coincide
with space (Ākāsa). Both space and Nibbāna are eternal
and unchanging. The former is eternal because it is nothing
in itself. The latter is spaceless and timeless. With regard to
the difference between space and Nibbāna, it may briefly be
said that space is not, but Nibbāna is.
The Nibbāna of Buddhists is, therefore, neither a state of nothingness
nor a mere cessation. What it is not, one can definitely
say. What precisely it is, one cannot adequately express in conventional
terms as it is unique. It is for self-realization (paccattam
Can you explain this in some other way? Does it mean that there is something called Nibbana?