parksjournal.com/wp-content/uploads/2014/10/PARKS-20.2-Lopoukhine-et-al-10.2305IUCN.CH_.2014.PARKS-20-2.NL_.en_.pdf
A great paper, well worth the read.
“At the most basic of levels, we learned that plants and animals provided food, fibre and skins and so we tended them and cared for them. Our affiliation, however, goes deeper than addressing the biological necessities of life. Nature has provided spiritual, aesthetic, and philosophical pillars for the growth and expression of human culture.”