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Evolutionist [[Theodosius Dobzhansky]] wrote concerning the theory of evolution: "The process of [[mutation]] is the only known source of the new materials of genetic variability, and hence of evolution."<ref>NorthWest Creation Network, [http://www.nwcreation.net/geneticquotes.html Quotes on Genetics]</ref> Concerning various [[theories of evolution]], most evolutionists believe that the processes of mutation, [[genetic drift]] and natural selection created every species of life that we see on earth today after [[Origin of Life|life first came about on earth]] although [[Theory of evolution and little consensus|there is little consensus on how this process is allegedly to have occurred]].<ref>[[Jonathan Sarfati]], P.H.D., F.M., [http://www.creation.com/content/view/1855 Climbing Mount Improbable:A Review of Climbing Mount Improbable by Richard Dawkins]</ref>  

Evolutionist [[Theodosius Dobzhansky]] wrote concerning the theory of evolution: "The process of [[mutation]] is the only known source of the new materials of genetic variability, and hence of evolution."<ref>NorthWest Creation Network, [http://www.nwcreation.net/geneticquotes.html Quotes on Genetics]</ref> Concerning various [[theories of evolution]], most evolutionists believe that the processes of mutation, [[genetic drift]] and natural selection created every species of life that we see on earth today after [[Origin of Life|life first came about on earth]] although [[Theory of evolution and little consensus|there is little consensus on how this process is allegedly to have occurred]].<ref>[[Jonathan Sarfati]], P.H.D., F.M., [http://www.creation.com/content/view/1855 Climbing Mount Improbable:A Review of Climbing Mount Improbable by Richard Dawkins]</ref>  

[[Pierre-Paul Grassé]], who served as Chair of evolutionary [[biology]] at Sorbonne University for thirty years and was ex-president of the French Academy of Sciences, stated the following: "Some contemporary biologists, as soon as they observe a mutation, talk about evolution. They are implicitly supporting the following syllogism: mutations are the only evolutionary variations, all living beings undergo mutations, therefore all living beings evolve....No matter how numerous they may be, mutations do not produce any kind of evolution." Grassé pointed out that bacteria which are the subject of study of many geneticists and molecular biologists are organisms which produce the most mutants.<ref>[http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref> Grasse then points that bacteria are considered to have "stabilized a billion years ago!".<ref>[http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref> Grassé  regards the "unceasing mutations" to be "merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect."<ref>[ http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref>  

[[Pierre-Paul Grassé]], who served as Chair of evolutionary [[biology]] at Sorbonne University for thirty years and was ex-president of the French Academy of Sciences, stated the following: "Some contemporary biologists, as soon as they observe a mutation, talk about evolution. They are implicitly supporting the following syllogism: mutations are the only evolutionary variations, all living beings undergo mutations, therefore all living beings evolve....No matter how numerous they may be, mutations do not produce any kind of evolution." Grassé pointed out that bacteria which are the subject of study of many geneticists and molecular biologists are organisms which produce the most mutants.<ref>[http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref> Grasse then points that bacteria are considered to have "stabilized".<ref>[http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref> Grassé  regards the "unceasing mutations" to be "merely hereditary fluctuations around a median position; a swing to the right, a swing to the left, but no final evolutionary effect."<ref>[ http://www.veritas-ucsb.org/library/origins/quotes/mutations.html Pierre-Paul Grassé regarding mutations]</ref>  

In addition, [[Harvard]] biologist [[Ernst Mayr]] wrote: "It must be admitted, however, that it is a considerable strain on one’s credulity to assume that finely balanced systems such as certain sense organs (the eye of vertebrates, or the bird’s feather) could be improved by random mutations."<ref>[http://www.creationscience.com/onlinebook/ReferencesandNotes9.html Ernst Mayr, Systematics and the Origin of Species (New York: Dover Publications, 1942), p. 296]</ref>

In addition, [[Harvard]] biologist [[Ernst Mayr]] wrote: "It must be admitted, however, that it is a considerable strain on one’s credulity to assume that finely balanced systems such as certain sense organs (the eye of vertebrates, or the bird’s feather) could be improved by random mutations."<ref>[http://www.creationscience.com/onlinebook/ReferencesandNotes9.html Ernst Mayr, Systematics and the Origin of Species (New York: Dover Publications, 1942), p. 296]</ref>