Book excerpt: A well-known Quaker historian explores the qualities of Quaker faith and practice that contribute to living sustainably in the world today. He explores such paradoxes as equality and community, unity and differentiation, integrity and personal discernment, and other aspects of life that Quakers have worked to bring into balance through their 350-year history. How have Quakers learned to create the kind of individual and community life that can prepare us to live fully and responsibly into a time of social and planetary change?