Mandukya Upanishad
With an Advaita Commentary from our Understanding
by Kenneth Jaques | 31,733 words
The Mandukya Upanishad is a short, just twelve verses, description of the material manifestation and the eventual return to unmanifest form of the Universe....
Verse 9
9. That should be well known as nature which is fully established, natural, inborn and not made artificially, and which does not abandon its own nature.
The statement here is that an entities nature does not change, an entities nature is what defines the entity. An entities nature is inborn and natural. An entity cannot abandon its inborn natural nature. All this is referring to the fact that the nature of immortality is just that, it naturally is immortal. An immortal thing cannot abandon the nature of immortality and all that means to become a thing with the nature of mortality.