Others such as Freire, Illich and Vygotsky have posited social models of learning that stress how vital the social and cultural contexts are to that personal growth - that, in Vygotsky's model for instance, the degree and depth of learning will be stimulated as much by those around you (whether siblings, parents, teachers or indeed artists) as by biological processes. Freire speaks of the individual's 'incompleteness', a state from which he or she will move out 'in constant search - a search which can only be carried out in communion with others' (Freire 1970: 80, quoted by Greene, 1995: 27).