Book excerpt: Ecologies of Prosperity for the Living City is a collection of writings, interviews, and projects exploring themes introduced during the 2016 Woltz Symposium: Novel Synergies, the Instrumental Commons, and Dispersed Concentrations. With new material from speakers Philippe Rahm, Nina-Marie Lister, Marina Alberti, Paola Viganò, Niek Hazendonk, Albert Cuchí, and Jedediah Purdy, the dialogue is framed by a series of seminal texts from the 20th century and reimagines existing urban challenges through exemplary design projects of today. Structured as a reader for students and design practitioners, it promotes urban design as a catalyst for cultural, social, and environmental transformation within cities, towns, communities, institutions, and individuals faced with today's most pressing urban challenges.