LOPES, F. E. F.; http://lattes.cnpq.br/1501395371701559; LOPES, Francisco Edson de Freitas. (BrasilCentro de Formação de Professores - CFPUFCGUniversidade Federal de Campina Grande, 2018-05-24)
The studies developed on language over the centuries conceive such an instrument as so
important that, in fact, without it, the human being would not be able to think, since all thought
structures itself ...