"Language, Truth and Logic" is a philosophical work by A.J. Ayer, published in 1936. It introduces the principles of logical positivism, arguing that meaningful statements must be either empirically verifiable or analytically true. Ayer critiques metaphysics and traditional philosophy, asserting that many philosophical problems arise from misunderstandings of language. The book emphasizes the importance of language in shaping our understanding of truth and meaning. Ayer suggests that many philosophical debates are meaningless because they cannot be tested or verified through experience. This work significantly influenced 20th-century philosophy, particularly in the realms of analytic philosophy and scientific philosophy.