Nothing
Nothing is a pronoun denoting the absence of anything. Nothing is a pronoun associated with nothingness.
In nontechnical uses, nothing denotes things lacking importance, interest, value, relevance, or significance.Nothingness is the state of being nothing, the state of nonexistence of anything, or the property of having nothing.
Philosophy
Western philosophy
Some would consider the study of "nothing" to be foolish, a typical response of this type is voiced by Giacomo Casanova (1725–1798) in conversation with his landlord, one Dr. Gozzi, who also happens to be a priest,
However, "nothingness" has been treated as a serious subject worthy of research for a very long time. In philosophy, to avoid linguistic traps over the meaning of "nothing", a phrase such as not-being is often employed to unambiguously make clear what is being discussed.
Parmenides
One of the earliest western philosophers to consider nothing as a concept was Parmenides (5th century BC) who was a Greek philosopher of the monist school. He argued that "nothing" cannot exist by the following line of reasoning: To speak of a thing, one has to speak of a thing that exists. Since we can speak of a thing in the past, it must still exist (in some sense) now and from this concludes that there is no such thing as change. As a corollary, there can be no such things as coming-into-being, passing-out-of-being, or not-being.
