The Arcades Project by Walter Benjamin
This book is one of my all time favourites. It is a patchwork of musings that really stay with you; a cultural tour de force!
'To great writers,' Walter Benjamin once wrote, 'finished works weigh lighter than those fragments on which they labour their entire lives.' Conceived in Paris in 1927 and still in progress when Benjamin fled the Occupation in 1940, The Arcades Project (in German, Das Passagen-Werk) is a monumental ruin, meticulously constructed over the course of thirteen years--'the theater,' as Benjamin called it, 'of all my struggles and all my ideas.'