A movement starts because of the social habits of friendship and the strong ties between close acquaintances. It grows because of the habits of a community, and the weak ties that hold neighborhoods and clans together. And it endures because a movement's leaders give participants new habits that create a fresh sense of identity and a feeling of ownership.

The Power of Habit: Why We Do What We Do in Life and Business (ed. Random House, 2012) - ISBN: 9780679603856