Lieblich discovered among modern nuns not only the centrality of their spiritual lives but also ``a commitment to social justice rarely equaled in secular life,'' whether they serve God in the cloister or the barrio. Her warmly sympathetic account of four particular women chronicles what motivated them to become nuns and what shapes their evolving spirituality. One of the four contributes to the sanctuary movement, another serves as a physician among the poor in Latin America, while a third calls for reproductive freedom and equal rights for women in the Catholic church. The fourth finds in the contemplative life an opportunity to serve God and others through prayer. A sometimes surprising, always intriguing picture emerges through these luminous profiles. Sisters is recommended for public libraries.-- Cynthia Widmer, Downingtown, Pa.