What was the essence of Ludwig Wittgenstein's thesis?

The essence of Ludwig Wittgenstein's thesis is centered around the idea that our understanding and experience of the world are significantly shaped by language. Wittgenstein explored how the meanings of words and the way they are used construct our perception of reality. His early work, particularly in "Tractatus Logico-Philosophicus," posits that language represents facts about the world, but he later emphasized in "Philosophical Investigations" that the meaning of words is intertwined with their practical use within specific life forms, thus transforming our comprehension of both language and reality. This notion underscores the idea that language is not merely a tool for describing a pre-existing world but rather plays an active role in creating and framing our experiences and interactions, influencing our perception of reality.

The other options, while related to philosophical discussions, do not capture the core of Wittgenstein's perspective. Describing the world solely as a physical reality, keeping language separate from philosophy, or asserting that the nature of language is fixed overlooks the dynamic relationship between language and our understanding of the world that Wittgenstein aimed to elucidate.