Thus the simplest event – a woman buying a pound of sugar, for example – must be analysed. Knowledge will grasp whatever is hidden within it. To understand this simple event, it is not enough merely to describe it; research will disclose a tangle of reasons and causes, of essences and ‘spheres’: the woman’s life, her biography, her job, her family, her class, her budget, her eating habits, how she uses money, her opinions and her ideas, the state of the market, etc. Finally I will have grasped the sum total of capitalist society, the nation and its history. And although what I grasp becomes more and more profound, it is contained from the start in the original little event. So now I see the humble events of everyday life as having two sides: a little, individual, chance event – and at the same time an infinitely complex social event, richer than the many 'essences' it contains within itself.

Lefebvre, H (1958) Critique of Everyday Life Vol 1 
quoted in Highmore, B (2002) Everyday Life and Cultural Theory: An Introduction London: Routledge