See this online text:

  • “‘Peace with God the Creator, Peace with All of Creation’: Message for the Celebration of the World Day of Peace, 1 January 1990”, by Pope John Paul II (Saint John Paul the Great) (8 December 2009). Alternately titled, “The Ecological Crisis: A Common Responsibility”. May be read online on this page of Catholic Culture, and at the Holy See.

See also these related texts:

  • The Challenge of Climate Change and Environmental Justice: A Distinctive Catholic Contribution”, by Thomas G. Wenski, Notre Dame Journal of Law, Ethics & Public Policy, Vol. 23, pp. 497-514 (2009). Available in PDF format at the Notre Dame Journal of Law, Ethics & Public Policy.
  • A Deeper Ecology: A Catholic Vision of the Person in Nature” by Mary Taylor, Communio: International Catholic Review, Volume 38 (Winter 2011). Available in PDF format (on this page) at Second Spring.
  • Ecology and the Common Good: Sustainability and Catholic Social Teaching”, by Russell Butkus and Steven Kolmes, Journal of Catholic Social Thought, Vol. 4, No. 2 (2007): pp. 403-436. Available in pdf format at the University of Portland.
  • Encyclical Letter “Laudato Si’” on Care for Our Common Home, by Pope Francis, 24 May 2015. May be read online at the Holy See.
  • Global Climate Change and Biodiversity / Cambiamenti Climatici Mondiali e Biodiversità: Extra Series 35, edited by Peter H. Raven (Vatican City: Pontifical Academy of Sciences, 2010). 37 pages. Available in pdf format at the Pontifical Academy of Sciences.
  • The Green Popes: Benedict XVI and John Paul II on the Environment, by Brother Ignatius Schweitzer, O.P. (New Haven, CT: Knights of Columbus Supreme Council, 2010). With Imprimatur. Part of the Veritas Series “Proclaiming the Faith in the Third Millennium”, under General Editor Father Juan-Diego Brunetta, O.P., Director of the Catholic Information Service, Knights of Columbus Supreme Council. Available in pdf format on this page of the Knights of Columbus Supreme Council.
  • “’If You Want To Cultivate Peace, Protect Creation’: Message for the Celebration of the World Day of Peace, 1 January 2010”, by Pope Benedict XVI, 8 December 2009 (Libreria Editrice Vaticana, 2009). May be read online at the Holy See.
  • “Natural Law and the Natural Environment: Pope Benedict XVI’s Vision Beyond Utilitarianism and Deontology”, by Professor Michael Baur, Ph.D. Chapter 3 of Environmental Justice and Climate Change: Assessing Pope Benedict XVI’s Ecological Vision for the Catholic Church in the United States, edited by Tobias Winwright & Jame Schaefer (Lanham, MD: Lexington Books, 2013): pp. 43-57. Available at Academia.edu, uploaded by Dr. Baur.
  • “‘On Development that Respects the Environment’: Address at the General Audience of August 26, 2009”, by Pope Benedict XVI. May be read online on this page of Catholic Culture.

On the International Day of Peace, 2019. For other online texts and legally free ebooks, you may access the List of Free eBooks (Arranged by Title) and the List of Free eBooks (Grouped by Subject).