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Species
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Mere chance … alone would never account for so habitual and large an amount of difference as that between varieties of the same species.
Charles Darwin
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It occurred to me, in 1837, that something might perhaps be made of this question (the origin of the species) by patiently accumulating and reflecting on all sorts of facts which could possibly have any bearing on it
Charles Darwin
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Not one living species will transmit its unaltered likeness to a distant futurity.
Charles Darwin
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Unless we suppose the same species to have been created in two different countries, we ought not to expect any closer similarity between the organic beings on the opposite sides of the Andes than on shores separated by a broad strait of the sea.
Charles Darwin
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I do not think more credit is due a man for defining a species, than to a carpenter for making a box. But I am foolish and rabid against species-mongers, or rather against their vanity; it is useful and necessary work which must be done; but they act as if they had actually made the species, and it was their own property.
Charles Darwin
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But at present, after drawing up a rough copy on this subject, my conclusion is that external conditions do extremely little, except in causing mere variability. This mere variability (causing the child not closely to resemble the parent) I look at as very different from the formation of a marked variety or new species.
Charles Darwin
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He who rejects this view of the imperfection of the geological record, will rightly reject the whole theory. For he may ask in vain where are the numberless transitional links which must formerly have connected the closely allied or representative species found in the successive stages of the same great formation?
Charles Darwin
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Hereafter we shall be compelled to acknowledge that the only distinction between species and well-marked varieties is, that the latter are known, or believed to be connected at the present day by intermediate gradations whereas species were formerly thus connected.
Charles Darwin
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Now when naturalists observe a close agreement in numerous small details of habits, tastes and dispositions between two or more domestic races, or between nearly-allied natural forms, they use this fact as an argument that all are descended from a common progenitor who was thus endowed; and consequently that all should be classed under the same species. The same argument may be applied with much force to the races of man. As it is improbable that the numerous and unimportant points of resemblance between the several races of man in bodily structure and mental faculties (I do not here refer to similar customs) should all have been independently acquired, they must have been inherited from progenitors who were thus characterised.
Charles Darwin
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Whoever is led to believe that species are mutable will do good service by conscientiously expressing his conviction; for only thus can the load of prejudice by which this subject is overwhelmed be removed.
Charles Darwin
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Authors of the highest eminence seem to be fully satisfied with the view that each species has been independently created. To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of the individual. When I view all beings not as special creations, but as the lineal descendants of some few beings which lived long before the first bed of the Cambrian system was deposited, they seem to me to become ennobled.
Charles Darwin
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It is really laughable to see what different ideas are prominent in various naturalists' minds, when they speak of 'species'; in some, resemblance is everything and descent of little weight-in some, resemblance seems to go for nothing, and Creation the reigning idea-in some, descent is the key,-in some, sterility an unfailing test, with others it is not worth a farthing. It all comes, I believe, from trying to define the undefinable.
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.
Charles Darwin
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I think it inevitably follows, that as new species in the course of time are formed through natural selection, others will become rarer and rarer, and finally extinct. The forms which stand in closest competition with those undergoing modification and improvement will naturally suffer most.
Charles Darwin
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It will be seen that I look at the term species, as one arbitrarily given for the sake of convenience to a set of individuals closely resembling each other, and that it does not essentially differ from the term variety, which is given to less distinct and more fluctuating forms. The term variety, again, in comparison with mere individual differences, is also applied arbitrarily, and for mere convenience sake.
Charles Darwin
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Some of my critics have said, "Oh, he is a good observer, but he has no power of reasoning!" I do not think that this can be true, for the "Origin of Species" is one long argument from the beginning to the end, and it has convinced not a few able men. No one could have written it without having some power of reasoning.
Charles Darwin
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A language, like a species, when once extinct, never…reappears. The same language never has two birth-places."
Charles Darwin
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I have heard, by roundabout channel, that Herschel says my book [The Origin of the Species] "is the law of higgledy-piggledy." What this exactly means I do not know, but it is evidently very contemptuous. If true this is a great blow and discouragement.
Charles Darwin
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I am almost convinced (quite contrary to opinion I started with) that species are not (it is like confessing a murder) immutable.
Charles Darwin
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Looking not to any one time, but to all time, if my theory be true, numberless intermediate varieties, linking most closely all the species of the same group together, must assuredly have existed; but the very process of natural selection constantly tends, as has been so often remarked, to exterminate the parent forms and the intermediate links. Consequently evidence of their former existence could be found only amongst fossil remains.
Charles Darwin
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Intelligence is based on how efficient a species became at doing the things they need to survive.
Charles Darwin
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The formation of different languages and of distinct species and the proofs that both have been developed through a gradual process, are curiously parallel.
Charles Darwin
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When the views advanced by me in this volume, and by Mr. Wallace, and when analogous views on the origin of species are generally admitted, we can dimly foresee that there will be a considerable revolution in natural history.
Charles Darwin
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Seeing this gradation and diversity of structure in one small, intimately related group of birds, one might really fancy that from an original paucity of birds in this archipelago, one species had been taken and modified for different ends.
Charles Darwin
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I am quite conscious that my speculations run quite beyond the bounds of true science. … I inferred that genera & Families with very few species (i. e. from Extinction) would be apt (not necessarily always) to have narrow ranges & disjoined ranges. You will not perceive, perhaps, what I am driving at & it is not worth enlarging on, — but I look at Extinction as common cause of small genera & disjoined ranges & therefore they ought, if they behaved properly & as nature does not lie to go together!
Charles Darwin
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The several difficulties here discussed, namely our not finding in the successive formations infinitely numerous transitional links between the many species which now exist or have existed; the sudden manner in which whole groups of species appear in our European formations; the almost entire absence, as at present known, of fossiliferous formations beneath the Silurian strata, are all undoubtedly of the gravest nature.
Charles Darwin
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It has sometimes been said that the success of the Origin proved "that the subject was in the air," or "that men's minds were prepared for it." I do not think that this is strictly true, for I occasionally sounded not a few naturalists, and never happened to come across a single one who seemed to doubt about the permanence of species.
Charles Darwin
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A grain in the balance will determine which individual shall live and which shall die - which variety or species shall increase in number, and which shall decrease, or finally become extinct.
Charles Darwin
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In July [1837] opened first note-book on Transmutation of Species. Had been greatly struck from about the month of previous March on character of South American fossils, and species on Galapagos Archipelago. These facts (especially latter), origin of all my views.
Charles Darwin
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On the ordinary view of each species having been independently created, we gain no scientific explanation.
Charles Darwin
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Quote of the day
Men were only made into "men" with great difficulty even in primitive society: the male is not naturally "a man" any more than the woman. He has to be propped up into that position with some ingenuity, and is always likely to collapse.
Wyndham Lewis
Charles Darwin
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Born:
February 12, 1809
Died:
April 19, 1882
(aged 73)
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