“…la constitución del Sujeto por efecto de una escritura reconoce, en su diferencia, las letras que lo preexisten. Lacan cree encontrar en el trazo horizontal de la escritura china, a la que denomina litoral, la condición real de un campo de lenguaje que alberga y sostiene en lo novedoso, la diferencia que permite su surgimiento. Es el Sujeto que, incluido en un campo de discurso, se apropia de letras que marcan diferencias y le son dadas en un acto de transmisión de un saber que le escapa. ” Palabras clave Sujeto Escritura Letra Discurso ABSTRACT SUBJECT WRITING LETTER SPEECH “…the Subject constitution by means of writing recognizes, on its difference, the letters that exist before it. Lacan thinks he found the actual condition of a language field, that keeps and maintains the difference that allows its rising, on Chinese horizontal strokes, which he calls litoral. The Subject, included on a speech field, takes the letters that make the differences and that are given to him in a transmission act of a knowledge that moves away from him.” Key words Subject Writing Letter Speech