Definition.com
Nothing is absolutely the limit of nothingness, and so there can be less of nothing, for it would make nothing something and nothing.
Definition.com
Nothing is that out of which nothing can come, and by the same token, nor can a thing go back to nothing.
Definition.com
Nothing is that from which something emerges by 'borrowing' its energy from the future and paying for it before the system notices that it is missing.
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