In this paper, I examine the important impact of Paul Broca on our understanding of language. Broca not only discovered the brain area responsible for language production, but he also highlighted the importance of a general language faculty – as Ferdinand de Saussure would later do in his Course in General Linguistics – considered as a kind of semiotic faculty that enables us to establish a constant relationship between an idea and a sign, between an entity that is situated on the level of content and an entity that is situated on the level of expression. Saussure later emphasized that this faculty of associating something on the level of content with something on the level of expression is a natural tendency in every human being. In this paper we will argue – with reference to the socio-constructivist theory of meaning – that the “generality” to which Broca refers should be understood to be closely correlated with the “naturalness” intended by Saussure. In particular, general and natural should be considered together, taking into account the ways in which human beings who live within a linguistic community put into practice, from childhood, their ability to build a language and, conversely, what happens when, in cases of aphasia, patients - so to speak - “lose the words”. Both children who are acquiring their mother tongue and aphasic patients who fail to “find the words” behave in a holistic way, within forms of life, that is, shared situations in which their own life experiences, habits, knowledge, words and so on come to life.