In the study, Arthur Rimbaud's used in "I is another" rhetoric that write prose-poem in 1871, named Letter of the Seer, are studied by examining under the influence of biographical datas and the intellectual structure is analyzed through the concept of "I", which is fall through of the modern philosophy. From the issue of "I" in the Descartes philosophy to Sartre's existential "I" besides romantics and literature, on concepts of "me and the other" in art is making a hermeneutic analysis.

Keywords: Arthur Rimbaud, I is another, Concept of the other, Existential I, Hermeneutic analysis, Thinking Systems