"Just another being living luminously between two eternities of darkness."
This is a sentence that was someone's bio on some social media. What does the word being and luminously mean here? Is the entire construction grammatically correct?
"Just another being living luminously between two eternities of darkness."
This is a sentence that was someone's bio on some social media. What does the word being and luminously mean here? Is the entire construction grammatically correct?
This isn't a sentence but a noun phrase. There is no tensed verb. It is a bio-tag, so there is an implied "I am".
[I am] just another being living luminously between two eternities of darkness.
"I am just another being" means "I am one of many creatures who are like me", that is, "I am not unique".
The non-finite clause "living luminously between two eternities of darkness" is a subject modifier indicating what this creature does. It lives between two eternities of darkness, presumably the pre-birth eternity that stretches backwards in time and the post-death eternity that stretches forward in time.
luminously is an adverb expressing the mode of living, "full of brightness". This seems to be an allusion to the idea that living creatures, or even all things that exist, have an "inner light". As an example, John Scotus Eriugena, the 9th century Irish philosopher wrote, "All things that are, are lights".