Nihilism is a nice belief but being is all one knows.
Being nothing takes some serious thought. Being something also takes some thought. Being is not a thought.
Being sees through all thought, even the thought of being lost in thought, be that thought something or nothing. Being is highly intelligent.
In mythical terms, being is the expression of the absolute godhead and parabrahman, or that which can’t be named.
One can only define the expression of the infinite. The infinite is indefinable. Its expression is said to be satcitananda.