The present article, makes a reflexiva boarding on the language of the thought, from the theoretical bases, that it displays as the language of the thought if structure and, that devices or principles are excellent for the understanding of its functionality. To speak on Language of the Thought, is quarrel condicionantes factors of Psychology, therefore, does not have as to initiate any referring studies the words and thoughts, without observing the influence of the same one, that long ago, is opposed the influences of Chomsky, American linguista, that called the attention for the neural complexity and the evolution the modern in cognitiva science and the science of the language. However, not yet a deepened analysis was made or so little a research concerning the subject, in this area, that justifies such quarrel. For in such a way, the objective of this article is to favor to the academics and researchers of the area of Letters, enlightening subsidies of the lingustico phenomenon, way to lead to the pupils to understand what and so that language is learned. Such objective, is specified in describing the theories on biological language and its processes; to argue the theories on the functioning of the thought; to understand the relation and functioning of the cerebral language and its relation with the psychological one. The procedure for accomplishment of the research is data-collection through the summary technique, by means of one it searches bibliographical, qualitative and descriptive, with arguments that clarify the functionality of the thought, while form of internal and independent communication, in accordance with the theories developed throughout the years through studies, that had identified that the mind has a proper language, fitting to concentrate efforts to understand the dimension cerebral in what it refers to the thought and the language. The justification of such arguments occurs in the first part that approaches the psychic and conceptual development of the human being, from the theory psicolingustica of Vygotsky, that instigates the origin the man, namely, on the sprouting of the language.