«Earthworms, though in appearance a small and despicable link in the chain of nature, yet, if lost, would make a lamentable chasm. [...] worms seem to be the great promoters of vegetation, which would proceed but lamely without them... [2]»
^Hazell, D.L., Heinsohn, R.G. and Lindenmayer, D.B. 2005. Ecology. pp. 97-112 in R.Q. Grafton, L. Robin and R.J. Wasson (eds.), Understanding the Environment: Bridging the Disciplinary Divides. Sydney, NSW: University of New South Wales Press, (p. 99)