Philosophical Investigations by Ludwig Wittgenstein, published posthumously in 1953, explores the nature of language and meaning. Translated by G.E. Anscombe, the work is divided into two parts: the first contains remarks, and the second discusses psychology and philosophy. Wittgenstein critiques fixed interpretations of language, arguing instead that meaning is shaped by usage in various social contexts. He introduces a variety of examples, such as a builder’s interaction with an assistant, to demonstrate how language functions in practical situations. Wittgenstein ultimately concludes that language cannot be understood through rigid logic but must be described through its fluid, evolving nature.