Centre for Lusophone and European Literatures and Cultures and to reflections on entrepreneurship, regarded as one of the drivers of innovation in Portuguese culture. In 2011, CLEPUL changed its name to Centre for Lusophone and European Literatures and Cultures of the Faculty of Letters of the University of Lisbon, while keeping its acronym, in order to preserve its history while embracing its new scientific landscape. In 2014, CLEPUL is home for 536 researchers and 110 integrated members, organized in 7 Research Groups: Each Research Group has its associated Pole in other universities, including in Brazil and Angola, gathering experts in Literary science, Linguistics, History, Art History, Cultural studies,
Spoken language is an innate human capability, and written language is a cultural invention. However some linguists, such as those of the Prague school, argue that written and spoken language possess distinct qualities which would argue against written language being dependent on spoken language for its existence. Both vocal and sign languages are composed of words. In vocal languages, words are made up from a limited set of vowels and consonants, and often tone. In sign languages, words are made up from a limited set of shapes, orientations, locations movements of the hands, and often facial expressions; in both cases, the building