Class: a preoccupation as old and ingrained into British life as scowling at the weather or throwing sticks for dogs.
From Chaucer to Zadie Smith, great writers from every era have sought to examine the peculiar hierarchical structures of wealth and privilege and explain how they define us.
The Art of Being Middle Class is a new book inspired by the cult blog The Middle Class Handbook, and though it's far from intended as a series tract on anything, its very existence is proof positive that class is still a subject we love to debate, discuss and, most of all, make fun of.
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And where once playwrights and authors would mock the common man to amuse the gentry (or do it the other way round), today's target of choice is undoubtedly the neuroses and anxieties of those in the middle.
Here's ten pointers from the book on how to be middle class. How many of them do you recognise as true?