Book in portuguese.The book is composed by two essays, the first is on literary criticism about Nuno Ramos' romance " " ("Oh", an exclamation, perhaps). Ramos is a brazilian writer, philosopher, architect and contemporary artist. He is famous by his instalations of art that are screamings against many forms of injustice including the massacre of many prisoners inside a state penitentiary in a rebelion in 80's in S o Paulo City, Brazil. His work as a writer is made mainly, in my opinion, with an existentialist thematic where man and his own body (both of them becoming older, day after day) reveal a deep desperation.Nuno Ramos have no economy in showing many materials and substances in his writings and works of art, trying to keep his language near or immanent to the things in themselves.What about the second essay? Lets make some questions.Is there something beyond the images that our senses form from things? Is there something underneath the veil of words, sounds, pictures, visions and sensations that we get from world and from everything that surround us?How is the world in itself without being considered by human perception?Philosophers like Immanuel Kant (Germany, XVIIIth century) and Charles Peirce (America, dead in early XXth century) tell us that we can say nothing about this.In this book I try to compare Charles Sanders Peirce's theory on language (and signs) and Jacques Lacan considerations on Unconscious mind as language. French psychoanalist Jacques Lacan tell us that unconscious mind has the structure of a language, as I said, and men and women are locked inside this condition forever. This is their destiny. In this book I try to investigate if we can assert that the lack of real contact with the world in itself (as exposed in Kant's and Peirce's theories) is really the same thing that Lacan did want to say to us when he assert that instauration of conscious language is at the same time the loss of many things that language can't reach.