Gaylord Nelson (3)
"The wealth of the nation is its air, water, soil, forests, minerals, rivers, lakes, oceans, scenic beauty, wildlife habitats and biodiversity...That's the whole economy. These biological systems are the sustaining wealth of the world."
-- attributed to Gaylord Nelson (1995) (Governor of Wisconsin and Senator, USA; Founder of Earth Day (born 1916, died 2005))
Source: http://www.nelsonearthday.net/