Free Surangama Sutra

Ananda, you have not yet understood that the objects we perceive are
unreal and illusory. They are subject to change, appearing here and there
and disappearing here and there. Yet these illusions, each with its conventional
designation, are in fact within the essential, wondrous enlightenment.


The same is true of the five aggregates, the six faculties, the
twelve sites, and the eighteen constituent elements. It is an illusion that
they come into being when both their causes and their conditions are
present, and it is an illusion that they cease to be when either their causes
or their conditions are absent.

You simply have not yet understood that, fundamentally, everything that comes and goes,
that comes into being and ceases to be, is within the true nature of the Matrix of the Thus-Come
One, which is the wondrous, everlasting understanding — the unmoving,
all-pervading, wondrous suchness of reality. But, though you may
seek within the everlasting reality of the Matrix of the Thus-Come One
for what comes and goes, for confusion and awakening, and for coming
into being and ceasing to be, you will not find them there.