CHICAGO - Eric Klinenberg is a professor of sociology and director of the Institute for Public Knowledge at New York University. His latest book, Palaces for the People: How Social Infrastructure Can Help Fight Inequality, Polarization, and the Decline of Civic Life (available now), makes the provocative case that the resilience of our communities rests not on shared values but shared spaces: the libraries, day-care centers, bookstores, coffee shops, and community gardens that create crucial, sometimes life-saving connections between us.