“Humanness is socio-culturally variable. In other words, there is no human nature in the sense of a biologically fixed substratum determining the variability of socio-cultural formations. There is only human nature in the sense of anthropological constants (for example, world-openness and plasticity of instinctual structure) that delimit and permit man’s socio-cultural formations. But the specific shape into which this humanness is moulded is determined by those socio-cultural formations and is relative to their numerous variations. While it is possible to say that man has a nature, it is more significant to say that man constructs his own nature, or more simply, that man produces himself.” - Berger, P.L. & Luckmann, T., 1966. The Social Construction of Reality, London: Penguin Books.