Lastly, isolation, by checking immigration and consequently competition, will give time for any new variety to be slowly improved; and this may sometimes be of importance in the production of new species. If, however, an isolated area be very small, either from being surrounded by barriers, or from having very peculiar physical conditions, the total number of the individuals supported on it will necessarily be very small; and fewness of individuals will greatly retard the production of new species through natural selection, by decreasing the chance of the appearance of favourable variations.
Charles DarwinRelated topics
appearance chance checking having immigration natural number production selection smallRelated quotes
It cannot be doubted, I think, that Mr. Darwin has satisfactorily proved that what he terms selection, or selective modification, must occur, and does occur, in nature; and he has also proved to superfluity that such selection is competent to produce forms as distinct, structurally, as some genera even are. If the animated world presented us with none but structural differences, I should have no hesitation in saying that Mr. Darwin has demonstrated the existence of a true physical cause, amply competent to account for the origin of living species, and of man among the rest.
Thomas Henry Huxley
The truth is that the family, like marriage, is one of those institutions whose very importance renders them complex. Abstract ideas are the only simple ones, because they have little to do with life. The family is not the arbitrary creation of a legislator; it is a natural consequence of the division of the species into two sexes, of the human child's protracted helplessness, of maternal love which ministers to this helplessness, of paternal love which is far more artificial and recent in human history, and composed just as much of love for the mother as of that for the child.
André Maurois
Ten percent of all the boys in schools are now threatened or injured with a weapon at school. One out of ten. The number of students caught with a firearm increased 29 percent in one year. "Natural selection"? If the strongest survive, well then if that guy's bigger than me, I better bring a gun to even the odds. This evolution theory is not just dumb, folks, it's dangerous. It removes all morality. There's no such thing as right and wrong. Might becomes right. Textbooks say you're an animal and share a common heritage with earthworms. Could it possibly be that what we are teaching kids is causing this problem in our schools?
Kent Hovind
The original thinking force of the universe progresses and develops itself in all possible determinations of which it is capable, just as the other original natural forces progress and assume all possible configurations. I am a particular determination of the formative force, like the plant; a particular determination of the peculiar motive force, like the animal; and in addition to this a determination of the thinking force: and the union of these three basic forces into one force, into one harmonious development, is the distinguishing characteristic of my species.
Johann Gottlieb Fichte
This shows the kindness of God to His creatures, even to us weak beings. His righteousness and justice as regards all animals are well known; for in the transient world there is among the various kinds of animals no individual being distinguished from the rest of the same species... all physical, psychical, and vital forces and organs that are possessed by one individual are found also in the other individuals. If any one is somehow different it is by accident, in consequence of some exception, and not by a natural property; it is also a rare occurrence.
Maimonides