Jane Jacobs said this quote

To approach a city, or even a city neighborhood, as if it were a larger architectural problem, capable of being given order by converting it into a disciplined work of art, is to make the mistake of attempting to substitute art for life. The results of such profound confusion between art and life are neither life nor art. They are taxidermy. In its place, taxidermy can be a useful and decent craft. However, it goes too far when the specimens put on display are exhibitions of dead, stuffed cities.

~ Jane Jacobs

Most sentimental ideas imply, at bottom, a deep if unacknowledged disrespect.

~ Jane Jacobs

Play on lively, diversified sidewalks differs from virtually all other daily incidental play offered American children today: It is play not conducted in a matriarchy.Most city architectural designers and planners are men. Curiously, they design and plan to exclude men as part of normal, daytime life wherever people live. In planning residential life, they aim at filling the presumed daily needs of impossibly vacuous housewives and preschool tots. They plan, in short, strictly for matriarchal societies.

~ Jane Jacobs

As children get older, this incidental outdoor activity--say, while waiting to be called to eat--becomes less bumptious, physically and entails more loitering with others, sizing people up, flirting, talking, pushing, shoving and horseplay. Adolescents are always being criticized for this kind of loitering, but they can hardly grow up without it. The trouble comes when it is done not within society, but as a form of outlaw life.The requisite for any of these varieties of incidental play is not pretentious equipment of any sort, but rather space at an immediately convenient and interesting place. The play gets crowded out if sidewalks are too narrow relative to the total demands put on them. It is especially crowded out if the sidewalks also lack minor irregularities in building line. An immense amount of both loitering and play goes on in shallow sidewalk niches out of the line of moving pedestrian feet.

~ Jane Jacobs