I have long, indeed for years, played with the idea of setting out
the sphere of life "bios" graphically on a map. First I envisaged
an ordinary map, but now I would incline to a general staff's map of
a city center, if such a thing existed ... I have evolved a system of
signs, and on the gray background of such maps they would make a colorful
show if I clearly marked in the houses of my friends and girlfriends,
the assembly halls of various collectives ... the hotel and brothel
rooms that I knew for one night, the decisive benches in the Tiergarten,
... the sites of prestigious cafés whose long-forgotten names
daily crossed our lips.