When he had first arrived, he had found London huge, odd, fundamentally incomprehensible, with only the Tube map, that elegant multicolored topographical display of underground railway lines and stations, giving it any semblance of order. Gradually he realized that the Tube map was a handy fiction that made life easier but bore no resemblance to the reality of the shape of the city above. It was like belonging to a political party, he thought once, proudly, and then, having tried to explain the resemblance between the Tube map and politics, at a party, to a cluster of bewildered strangers, he had decided in the future to leave political comment to others.

Author: Neil Gaiman