These four principles illustrate that the concept of sustainable development in the Earth Charter embraces the view that the problems of poverty, environmental degradation, ethnic and religious conflict, and social injustice are all interdependent, and that policies that address one problem can impact and improve other issues.
" Exploring Synergies between Faith Values and Education for Sustainable Development" by the UNESCO Chair on Education for Sustainable Development (2012) The Earth Charter Center for Education for Sustainable Development and the University of Peace (Costa Rica).