Pope Benedict XVI's Letter to the Ecumenical Patriarch of Constantinople on the Occasion of the Seventh Symposium of the Religion, Science and the Environment Movement, w2.vatican.va. September 1, 2007.
William Shakespeare (2013). “Histories of Shakespeare in Plain and Simple English (a Modern Translation and the Original Version)”, p.37, BookCaps Study Guides
Mahatma Gandhi (1965). “Glorious Thoughts of Gandhi: Being a Treasury of about Ten Thousand Valuable and Inspiring Thougths of Mahatma Gandhi, Classified Under Four Hundred Subjects”