" In the words of an interpreter, he states that the social and imaginative function of cities “is under threat from the tyranny of bad architecture, soulless planning and indifference to the basic unit of urban language, the street, and the ‘ruissellement de paroles’ (stream of words), the endless stories, which animate it. Keeping the street and the city alive depends on understanding their grammar and generating the new utterances on which they thrive. And for Bailly, the principal agency of this process is walking, what he calls the ‘grammaire generative de jambes’ (generative grammar of the legs). "

― Rebecca Solnit , Wanderlust: A History of Walking