Cities — like books — can be read, and Jan Gehl understands their language. The street, the footpath, the square, and the park are the grammar of the city; they provide the structure that enables cities to come to life, and to encourage and accommodate diverse activities, from the quiet and contemplative to the noisy and busy. A humane city — with carefully designed streets, squares, and parks — creates pleasure for visitors and passers-by, as well as for those who live, work, and play there every day.