“Evolution in… cases has clearly been a very slow and almost (if not quite) continuous process, exactly as Darwin had predicted.
We must remember, however, that the organisms studied in this way are far from representative. They are in general the most successful members of animal associations living in very constant marine or lacustrine environments. We have not got similar data for land species… Nor do we possess them for the rarer forms. We shall see… that perhaps dominant species in a uniform environment are the least likely to undergo sudden change to a new type.”

— J. B. S. Haldane, book The Causes of Evolution

Introduction, p. 22.
The Causes of Evolution (1932)

Adopted from Wikiquote. Last update June 3, 2021. History

Help us to complete the source, original and additional information

Do you have more details about the quote "Evolution in… cases has clearly been a very slow and almost (if not quite) continuous process, exactly as Darwin had pr…" by J. B. S. Haldane?

J. B. S. Haldane32

Geneticist and evolutionary biologist 1892–1964

Gareth Morgan book Images of Organization

Source: Images of Organization (1986), p. 39; As cited in as Vivien Martin -(2003) Leading change in health and social care. p. 157: About the organization as organism.

“Evolution must have involved the simultaneous change in many genes, which doubtless accounts for its slowness. Here matters would have been easier if heritable variations really formed a continuum, as Darwin apparently thought, i. e. if there were no limit to the possible smallness of a variation. But this is clearly not the case when we are considering meristic characters. …the atomic nature of Mendelian inheritance suggests very strongly that even where variation is apparently continuous this appearance is deceptive.”

J. B. S. Haldane book The Causes of Evolution

Source: The Causes of Evolution (1932), Ch. IV Natural Selection, pp. 103-104.

“Darwinism is still very much alive, utterly dominating biology. Despite the fact that no one has ever been able to prove the creation of a single distinct species by Darwinist means, Darwinism dominates the academy and the media.”

Ben Stein (1944) actor, writer, commentator, lawyer, teacher, humorist

Darwinism: The Imperialism of Biology?, Expelled: No Intelligence Allowed, 31 October 2007, 2008-02-26 http://expelledthemovie.com/blog/page/3/,

“We are the only species that has to pay to live and eat, but we are supposed to be the most intelligent?”

Ralph Smart

“Darwin believed that the crossing of two types generally led to a blend, and that consequently bisexual reproduction tended to make a species uniform. He therefore had to postulate some cause constantly at work to keep up the inheritable variation within a species. He very naturally looked to the effects of differences of environment. …It was shown that Darwin had been wrong in supposing that variations due to environment were inheritable. Selection merely picked out the best available line from a given population, and would not, as Darwin had believed, give rise to an unlimited amount of change.”

J. B. S. Haldane book The Causes of Evolution

Introduction, pp.14-20.
The Causes of Evolution (1932)

“We ourselves are part of a guild of species that lie within and without our bodies. Aboriginal peoples and the Ayurvedic practitioners of ancient India have names for such guilds, or beings made up (as we are) of two or more species forming one organism. Most of nature is composed of groups of species working interdependently …”

Bill Mollison (1928–2016) Australian permaculturist

Source: Permaculture: A Designers' Manual (1988), chapter 4.8

“When two sympatric, closely related species appear to have very similar needs, we may ask whether mechanisms exist that enable them to avoid direct competition. Implicit in this questions the presumption that two species with identical requirements cannot coexist”

Carl Safina (1955) American biologist

Gause 1934
[Foraging habitat partitioning in Roseate and Common Terns, The Auk, 107, 2, April 1990, 351–358, 10.2307/4087619, https://www.jstor.org/stable/4087619]

“The dynamic earth has been spewing out the constituents of evolution and progress throughout its history, nurturing all species from the very first forms of life to our own.”

Shawna Vogel science writer

Naked Earth: the New Geophysics (1995)

“Only within the 20th Century has biological thought been focused on ecology, or the relation of the living creature to its environment. Awareness of ecological relationships is — or should be — the basis of modern conservation programs, for it is useless to attempt to preserve a living species unless the kind of land or water it requires is also preserved. So delicately interwoven are the relationships that when we disturb one thread of the community fabric we alter it all — perhaps almost imperceptibly, perhaps so drastically that destruction follows.”

Rachel Carson (1907–1964) American marine biologist and conservationist

"Essay on the Biological Sciences" in Good Reading (1958)

“Not one species of any creature which flourished before the tertiary (Ehrenberg's infusoria excepted) now exists; and of the mammalia which arose during that series, many forms are altogether gone, while of others we have now only kindred species. Thus to find not only frequent additions to the previously existing forms, but frequent withdrawals of forms which had apparently become inappropriate—a constant shifting as well as advance—is a fact calculated very forcibly to arrest attention. A candid consideration of all these circumstances can scarcely fail to introduce into our minds a somewhat different idea of organic creation from what has hitherto been generally entertained.”

Robert Chambers (publisher, born 1802) book Vestiges of the Natural History of Creation

Source: Vestiges of the Natural History of Creation (1844), p. 152

Help us to complete the source, original and additional information

J. B. S. Haldane32

Related quotes

Related topics