I would give absolutely nothing for the theory of Natural Selection, if it requires miraculous additions at any one stage of descent. — Charles Darwin Copy Share Image
I am almost convinced (quite contrary to opinion I started with) that species are not (it is like confessing a murder) immutable. — Charles Darwin Copy Share Image
Although much remains obscure, and will long remain obscure, ... I am convinced that Natural Selection has been the main but not… — Charles Darwin Copy Share Image
Not one change of species into another is on record ... we cannot prove that a single species has been changed. — Charles Darwin Copy Share Image
Mere chance ... alone would never account for so habitual and large an amount of difference as that between varieties of the… — Charles Darwin Copy Share Image
It is not the biggest, the brightest or the best that will survive, but those who adapt the quickest. — Charles Darwin Copy Share Image
Man is developed from an ovule, about 125th of an inch in diameter, which differs in no respect from the ovules of… — Charles Darwin Copy Share Image
Why, if species have descended from other species by insensibly fine gradations, do we not everywhere see innumerable transitional forms. — Charles Darwin Copy Share Image
On the theory of natural selection we can clearly understand the full meaning of that old canon in natural history, “Natura non… — Charles Darwin Copy Share Image
It occurred to me, in 1837, that something might perhaps be made of this question (the origin of the species) by patiently… — Charles Darwin Copy Share Image
It has sometimes been said that the success of the Origin proved "that the subject was in the air," or "that men's… — Charles Darwin Copy Share Image
Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such… — Charles Darwin Copy Share Image
But I own that I cannot see as plainly as others do, and I should wish to do, evidence of design and… — Charles Darwin Copy Share Image
... if variations useful to any organic being do occur, assuredly individuals thus characterized will have the best chance of being perserved… — Charles Darwin Copy Share Image
When I view all beings not as special creations, but as the lineal descendants of some few beings which lived long before… — Charles Darwin Copy Share Image
But then with me the horrid doubt always arises whether the convictions of man's mind, which has been developed from the mind… — Charles Darwin Copy Share Image
I have just finished my sketch of my species theory. If as I believe that my theory is true & if it… — Charles Darwin Copy Share Image
“Causes of Variability — Effects of Habit and the use and disuse of Parts — Correlated Variation — Inheritance — Character of… — Charles Darwin Copy Share Image
Looking to future generations, there is no cause to fear that the social instincts will grow weaker... the social instincts, - the… — Charles Darwin Copy Share Image
Extinction has only separated groups: it has by no means made them; for if every form which has ever lived on this… — Charles Darwin Copy Share Image
“To admit that species generally become rare before they become extinct—to feel no surprise at the comparative rarity of one species with… — Charles Darwin Copy Share Image
“...But I own that I cannot see as plainly as others do, and as I should wish to do, evidence of design… — Charles Darwin Copy Share Image
“Although much remains obscure, and will long remain obscure, I can entertain no doubt, after the most deliberate study and dispassionate judgment… — Charles Darwin Copy Share Image
But just in proportion as this process of extermination has acted on an enormous scale, so must the number of intermediate varieties,… — Charles Darwin Copy Share Image
We thus learn that man is descended from a hairy quadruped, furnished with a tail and pointed ears, probably arboreal in its… — Charles Darwin Copy Share Image
I think it can be shown that there is such an unerring power at work in Natural Selection, which selects exclusively for… — Charles Darwin Copy Share Image
“I am convinced that natural selection has been the main but not exclusive means of modification.” — Charles Darwin Copy Share Image
The survival or preservation of certain favoured words in the struggle for existence is natural selection. — Charles Darwin Copy Share Image
“It is difficult to believe in the dreadful but quiet war lurking just below the serene facade of nature.” — Charles Darwin Copy Share Image
The noble science of Geology loses glory from the extreme imperfection of the record. The crust of the earth with its embedded… — Charles Darwin Copy Share Image
“As the species of the same genus usually have, though by no means invariably, much similarity in habits and constitution, and always… — Charles Darwin Copy Share Image
A grand and almost untrodden field of inquiry will be opened, on the causes and laws of variation, on correlation of growth,… — Charles Darwin Copy Share Image
Although I am fully convinced of the truth of Evolution, I by no means expect to convince experienced naturalists. But I look… — Charles Darwin Copy Share Image
Man may be excused for feeling some pride at having risen, though not through his own exertions, to the very summit of… — Charles Darwin Copy Share Image
I think it inevitably follows, that as new species in the course of time are formed through natural selection, others will become… — Charles Darwin Copy Share Image
I am actually weary of telling people that I do not pretend to adduce [direct] evidence of one species changing into another,… — Charles Darwin Copy Share Image
“The small strength and speed of man, his want of natural weapons, etc., are more than counterbalanced, firstly, by his intellectual powers,… — Charles Darwin Copy Share Image
It is not the strongest of the species that survives, nor the most intelligent that survives. It is the one that is… — Charles Darwin Copy Share Image
“But Natural Selection, as we shall hereafter see, is a power incessantly ready for action, and is immeasurably superior to man's feeble… — Charles Darwin Copy Share Image
The belief in God has often been advanced as not only the greatest but the most complete of all the distinctions between… — Charles Darwin Copy Share Image
The main conclusion here arrived at ... is that man is descended from some less highly organized form. — Charles Darwin Copy Share
So great is the economy of nature, that most flowers which are fertilised by crepuscular or nocturnal insects emit their odour chiefly or exclusively… — Charles Darwin Copy Share
I see no good reasons why the views given in this volume should shock the religious views of anyone. — Charles Darwin Copy Share
I am quite conscious that my speculations run beyond the bounds of true science…It is a mere rag of an hypothesis with as many… — Charles Darwin Copy Share
If worms have the power of acquiring some notion, however rude, of the shape of an object and over their burrows, as seems the… — Charles Darwin Copy Share
We can allow satellites, planets, suns, universe, nay whole systems of universes, to be governed by laws, but the smallest insect, we wish to… — Charles Darwin Copy Share
Formerly Milton's Paradise Lost had been my chief favourite, and in my excursions during the voyage of the Beagle, when I could take only… — Charles Darwin Copy Share
May we not suspect that the vague but very real fears of children, which are quite independent of experience, are the inherited effects of… — Charles Darwin Copy Share
It may be said that natural selection is daily and hourly scrutinizing, throughout the world, every variation, even the slightest; rejecting that which is… — Charles Darwin Copy Share
“Darwin, landing in Brazil in 1832, had a similar reaction, colored by his reading of his predecessor." Humboldt's glorious descriptions are & will for… — Charles Darwin Copy Share
“To admit that species generally become rare before they become extinct—to feel no surprise at the comparative rarity of one species with another, and… — Charles Darwin Copy Share
To suppose that the eye could have been formed by natural selection, seems, I freely confess, absurd in the highest possible degree — Charles Darwin Copy Share
It is interesting to contemplate an entangled bank clothed with many plants of many kinds with birds singing on the bushes, with various insects… — Charles Darwin Copy Share