Existence :

You cannot deny your own existence.

You always feel “I am.” “Aham Asmi.”

He who says that the Atma is Sunya himself asserts his own existence :-

the denier of the Atman exists!

You cannot deny your own existence –

the existence of the one who denies the existence Self.

This gives the clue to the fact that Brahman or the Absolute is Eternal Existence,

which is the basis or substratum for the mind and the senses.

Swami Sivanamda