Cornwall's prolific writing is always fresh and innovative, weaving together classical and contemporary theology with contemporary thought and social practice. Her latest book does not disappoint. Her approach to marriage, same-sex families, adoption, even polyamory (and more) is a tour de force, achieving in her writing what she advocates for Christian traditions more generally - that they are dynamic; and that they must negotiate continuity with change, and identity with difference. Her analysis of 'generativity', whether in 'un/familiar' family forms, or within the theological tradition as it generates new thinking, is timely and convincing, and will also generate much appreciation among her readers.