The original meaning of "nirvana"
Nirvana is often thought to mean the afterlife in Buddhism, but originally it does not have such a religious meaning.
The original meaning of the word "nirvana" refers to the mental state reached by achieving enlightenment.
Achieving enlightenment in Buddhism does not originally mean going to the afterlife or becoming a god-like being in a religious sense.
When you continue to meditate in the correct way, you will come to a moment when your mental state changes significantly.
As a result, you can see the world from a higher dimension than before, gaining mental freedom and stability.
The original meaning of the word "achieving enlightenment" is to reach the above-mentioned mental state through meditation.
This mental state is Nirvana.
The origin of the word "Nirvana" means "nothingness", and the mental state upon achieving enlightenment is indeed a state of "nothingness".
In other words, the original meaning of Nirvana is a state where mental restraints are removed through meditation, resulting in mental freedom and stability.
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The original meaning of "all things are impermanent" and "all phenomena are non-self"