28.Rousseau nevertheless seeks to explain the differences between the Southern and the Northern languages in terms of the idea that the former have their origin in the passions while the latter are said to have theirs in human need. When it comes to the Southern languages, Rousseau appeals to the fourth of the explanations listed concerning the formation of societies, since he begins by referring to the meetings which must have begun to take place between girls coming to fetch water for the household and young men coming to water their herds at the same source. In time these meetings gave rise to new sentiments in these young people and the desire to communicate them to each other. These sentiments were those of love, which gestures alone could not properly express but only a voice accompanied by passionate accents. On this basis, Rousseau concludes that ‘in mild climates, in fertile regions it took all the liveliness of the agreeable passions to start men speaking’. Rousseau (n. 16), p. 407. He thus appears to think that, although people would have already been driven by their needs to unite and form societies prior to the development of the Southern languages as national languages, they could have relied on gestures alone to satisfy their needs insofar as their satisfaction required that people cooperate with each other. It is therefore not the case that the young lovers develop a new, particular language, namely that of love, on the basis of a pre-existing national language which originally arose on the basis of human need. Rather, this national language itself develops on the basis of the lovers’ new language. Rousseau’s account of the essential differences between the Southern and the Northern languages makes it hard to tell, in fact, whether he is attempting to explain the origins of spoken language as such or, as the title ‘Essay on the Origin of the Languages’ implies, the origins of particular families of languages. Rousseau claims that song and speech have a common origin (Rousseau (n. 16), p. 410). Moreover, he occasionally appears to want to suggest that all human beings at first spoke a poetical and musical language, so that ‘languages were songlike and passionate before they were plain and methodical’. Ibid. p. 381. He immediately qualifies this statement, however, stating that it is not valid without exception. This qualification can be seen as an expression of Rousseau’s recognition of the difficulties involved in reconciling this claim with what he has to say about the origin of the Northern languages.