“… the idea of Gaia is anticipated most clearly in a line from the Tao Te Ching, the oldest Taoist scripture. In ancient Chinese rituals, straw dogs were used as offerings to the gods. During the ritual they were treated with the utmost reverence. When it was over and they were no longer needed they were trampled on and tossed aside: 'Heaven and earth are ruthless, and treat the myriad creatures as straw dogs.' If humans disturb the balance of the Earth they will be trampled on and tossed aside. Critics of the Gaia theory say they reject it because it is unscientific. The truth is that they fear and hate it because it means that humans can never be other than straw dogs.”
The Human: Straw Dogs (p. 33-4)
Straw Dogs: Thoughts on Humans and Other Animals (2002)
Help us to complete the source, original and additional information
John Gray 164
British philosopher 1948Related quotes

“This is not a novel to be tossed aside lightly. It should be thrown with great force.”
Quoted in The Algonquin Wits (1968) edited by Robert E. Drennan, and The Dispatch http://news.google.com/newspapers?id=r04cAAAAIBAJ&sjid=WFEEAAAAIBAJ&pg=7250,5269688&dq=aside-lightly+dorothy-parker&hl=en (October 1962). As noted at Snopes, Drennan's source seems to be a Parker review which does not seem to contain this quote. If Parker wrote this statement anywhere the primary source seems to have gone missing.
The earliest attribution of this quote was published in the February 1960 Readers' Digest, and credited to a book review by Sid Ziff in the Los Angeles Mirror-News, which existed from 1955 to 1960. This is a little odd, considering that Sid Ziff was a sports columnist; the reference in Readers' Digest has been confirmed but the quote from the Mirror-News has not - see Quote Investigator http://quoteinvestigator.com/2013/03/26/great-force/#more-5787 for details.
Misattributed

Source: Thou Art That: Transforming Religious Metaphor

“for earth were too like heaven,
If length of life to love were given.”
The Improvisatrice (1824)

Source: Culture and Value (1980), p. 31e
The Rigveda: A Historical Analysis (2000), Chapter 4 : The Geography of the Rigveda