In the book Language and Myth, Cahill, a cultural semioticist, puts forward that living in a simple physical universe is not a symbolic universe. Language, myth, art and religion are all part of this symbolic universe. They are different silk threads, a network woven into symbols and an interwoven network of human experience. Language and Myth indicates an important trend of European philosophy in the 20th century, that is, the turn of language and the thorough criticism of western metaphysical philosophy tradition and even cultural tradition since Plato, followed by thorough and extreme existentialism and deconstruction.