"A collection of individuals is not always, and by the mere fact of its collectivity, a society. On the other hand, when people come together anywhere, in the most casual way, on the street corner or ..."A collection of individuals is not always, and by the mere fact of its collectivity, a society. On the other hand, when people come together anywhere, in the most casual way, on the street corner or at a railway station, no matter how great the social distances between them, the mere fact that they are aware of one another's presence sets up a lively exchange of influences, and the behavior that ensues is both social and collective."