Mary Evelyn Tucker discusses the teachings of Mahatma Ghandi and Martin Luther King Jr. and their relation to the Earth Charter. Tucker highlights the idea that humanity is capable of embracing long-term, radical change and suggests that humans are at a critical point in their history, one in which the recognition of humanity as being part of a living and unique Earth community is vital. Tucker continues to discuss the Earth Charter, its relation to Satyagraha, and the incorporation of principles of nonviolence, democracy, and peace in its body. Presentation at “Satyagraha: Gandhi’s ‘Truth Force’ in the Age of Climate Change” presented by the Garrison Institute on April 13, 2008 at the Cathedral Church of Saint John the Divine in New York City.