Environmental Quotes - Page 22
Lester R. Brown, Michael Renner (2014). “Vital Signs 1999-2000: The Environmental Trends That Are Shaping Our Future”, p.25, Routledge
"A Complete Collection of English Proverbs".
John Burroughs (1921). “The Writings of John Burroughs”
Joan D. Chittister (2004). “Called to Question: A Spiritual Memoir”, p.181, Sheed & Ward