Dallas' new city slogan - "Live Large, Think Big" - makes David Spence chuckle, if only ironically. Having worked for two local community development firms, Spence says that living large in Dallas often means tearing down old buildings to make way for bigger ones. Now running his own building company, Good Space, Inc., Spence has fought this destructive trend for nearly a decade. Using his legal and business training, as well as his Peace Corps experience in Guatemala, Spence has helped revitalize the city's south-side Bishop Arts District. This neighborhood was crumbling and forgotten until 10 years ago, when Spence and others began rehabbing its pre-World War II structures as apartments, art studios, office suites, and restaurants. "When you tear down buildings, you are tearing down incubators for new ideas," Spence says, citing the popular idea espoused by urbanist Jane Jacobs as he sips coffee in a restored soda-fountain building in the neighborhood. "The Bishop Arts District is filled with just the kind of new ventures that Jacobs was talking about."