As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for exist… - Charles Darwin

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As many more individuals of each species are born than can possibly survive; and as, consequently, there is a frequently recurring struggle for existence, it follows that any being, if it vary however slightly in any manner profitable to itself, under the complex and sometimes varying conditions of life, will have a better chance of surviving, and thus be naturally selected. From the strong principle of inheritance, any selected variety will tend to propagate its new and modified form.

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About Charles Darwin

Charles Robert Darwin (12 February 1809 – 19 April 1882) was an English naturalist, geologist and biologist, best known for his contributions to the science of evolution. He proposed that evolution could be explained in part through natural and sexual selection. Prompted by awareness that Alfred Russel Wallace was developing similar theories he published his own sooner than he had originally intended. This theory is now an integral component of biological science.

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Also Known As

Birth Name: Charles Robert Darwin
Alternative Names: Charles R. Darwin C. R. Darwin Darwin C.R. Darwin CR Darwin
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Additional quotes by Charles Darwin

Finally, it may not be a logical deduction, but to my imagination it is far more satisfactory to look at such instincts as the young cuckoo ejecting its foster-brothers, ants making slaves, the larvae of ichneumonidae feeding within the live bodies of caterpillars, not as specially endowed or created instincts, but as small consequences of one general law leading to the advancement of all organic beings — namely, multiply, vary, let the strongest live and the weakest die.

In this case, therefore, the worms judged with a considerable degree of correctness how best to draw the withered leaves of this foreign plant into their burrows; notwithstanding that they had to depart from their usual habit of avoiding the foot-stalk.

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