Caritas in Veritate is an encyclical by Pope Benedict XVI that addresses the relationship between charity and truth as the foundation of the Church's social doctrine. Benedict XVI praises the work of Pope Paul VI in Populorum Progressio and commits to reinterpreting the principles of integral human development for contemporary times. After reviewing the writings of Paul VI, he uses the then-current financial crisis to evaluate the global economic system and present-day conceptions of development. True progress is the result of interdisciplinary cooperation that draws on multiple kinds of knowledge; without this, globalization becomes a debilitating and negative force. The encyclical then addresses the interplay between fraternity, economic development, and civil society, suggesting a shift towards an "economy of gratuitousness." Disregard for the moral nature of economics also has negative consequences for the environment. Benedict further considers areas of possible global cooperation and the influence of technology on human development.