The objective of this monograph is to present with two original academic papers the two latest outstanding linguistic theories in Performative Linguistics since the last few years, and demonstrate their monumental import for our better understanding of the nature of Language.In PART I, the author explores the stunning intellectual impact of Language Ownership on what constitutes, or does not constitute, a dialect of a given language. According to the author, a Language Community, which is the totality of the users of a given language, is made up of its Language Owners, who have ownership authority over the language, and Language Guests, who have no ownership authority over the language, but may only use it responsibly. PART II explores the stunning intellectual impact of The Reportorial Character of Language for explaining the unending, intriguing allure of the linguistic relativity hypothesis, and demonstrating its true unpatrolled significance for our better understanding of the nature of Language.