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Quotes About Evolution

Evrim bir kuram deÄŸil bir olgudur.
~ Carl Sagan
En basit yap?l? tek hücreli organizma bile en mükemmel cep saatinden daha karma??k bir makinedir.
~ Carl Sagan
All that we have seen is something of a vast and intricate and lovely universe. There is no particular theological conclusion that comes out of an exercise such as the one we have just gone through. What is more, when we understand something of the astronomical dynamics, the evolution of worlds, we recognize that worlds are born and worlds die, they have lifetimes just as humans do, and therefore that there is a great deal of suffering and death in the cosmos if there is a great deal of life.
~ Carl Sagan
explorations that are exhilarating to consider. They remind us that humans have evolved to wonder, that understanding is a joy, that knowledge is prerequisite to survival.
~ Carl Sagan
Perhaps if one less dragonfly had drowned in the Carboniferous swamps, the intelligent organisms on our planet today would have feathers and teach their young in rookeries. The pattern of evolutionary causality is a web of astonishing complexity; the incompleteness of our understanding humbles us.
~ Carl Sagan
Those mothers with hereditary large pelvises were able to bear large-brained babies who because of their superior intelligence were able to compete successfully in adulthood with the smaller-brained offspring of mothers with smaller pelvises.
~ Carl Sagan
We are the only species on the planet, so far as we know, to have invented a communal memory stored neither in our genes nor in our brains. The warehouse of that memory is called the library. A
~ Carl Sagan
The brain must function during the renovation […] The old parts are in charge of too many fundamental functions for them to be replaced altogether. So they wheeze along, out of-date and sometimes counterproductive, but a necessary consequence of our evolution.
~ Carl Sagan
Stars are phoenixes, rising from their own ashes.
~ Carl Sagan
Somos el producto de una larga serie de accidentes biológicos. En la perspectiva cósmica no hay razón alguna para pensar que seamos los primeros, los últimos o los mejores.
~ Carl Sagan
In addition, human beings have, in the most recent few tenths of a percent of our existence, invented not only extra-genetic but also extrasomatic knowledge: information stored outside our bodies, of which writing is the most notable example.
~ Carl Sagan
Those who avoid decapitation leave more offspring.
~ Carl Sagan
MUCH OF HUMAN HISTORY can, I think, be described as a gradual and sometimes painful liberation from provincialism, the emerging awareness that there is more to the world than was generally believed by our ancestors.
~ Carl Sagan
It would seem that our intelligence is the source of our unhappiness in an almost literal way; but it would also imply that our unhappiness is the source of our strength as a species.
~ Carl Sagan
Scientists, being primates, and thus given to dominance hierarchies, of course do not always follow this commandment.)
~ Carl Sagan
Our probable ancestors, Homo erectus and Homo habilis -now extinct- are classified as of the same genus (Homo) but of different species, although no one (at least lately) has attempted the appropriate experiments to see if crosses of them with us would produce fertile offspring.
~ Carl Sagan
Pliny suggested that the ostrich, then newly discovered, was the result of a cross between a giraffe and a gnat. (It would, I suppose, have to be a female giraffe and a male gnat.) In practice there must be many such crosses which have not been attempted because of a certain understandable lack of motivation.
~ Carl Sagan
Somos el producto de cinco mil millones de años de evolución biológica lenta, fortuita, y no hay razón alguna para pensar en que se haya detenido tal proceso evolutivo. El hombre es un animal en período de transición. No es el clímax de una creación.
~ Carl Sagan
For we are the local embodiment of a Cosmos grown to self-awareness. We have begun to contemplate our origins: starstuff pondering the stars; organized assemblages of ten billion billion billion atoms considering the evolution of atoms; tracing the long journey by which, here at least, consciousness arose. Our loyalties are to the species and the planet. We speak for Earth. Our obligation to survive is owed not just to ourselves but also to that Cosmos, ancient and vast, from which we spring.
~ Carl Sagan
In addition, science is a delight; evolution has arranged that we take pleasure in understanding - those who understand are more likely to survive.
~ Carl Sagan
We knew the Moon from our earliest days. It was there when our ancestors descended from the trees into the savannahs, when we learned to walk upright, when we first devised stone tools, when we domesticated fire, when we invented agriculture and built cities and set out to subdue the Earth.
~ Carl Sagan
Thus, an inhibition center developed below what in humans is the temporal lobe, to turn off much of the functioning of the reptilian brain; and an activation center evolved in the pons to turn on the R-complex, but harmlessly, during sleep.
~ Carl Sagan
Human spoken language seems to be adventitious. The exploitation of organ systems with other functions for communication in humans is also indicative of the comparatively recent evolution of our linguistic abilities.
~ Carl Sagan
In addition to Ameslan, chimpanzees and other nonhuman primates are being taught a variety of other gestural languages. And it is just this transition from tongue to hand that has permitted humans to regain the ability-lost, according to Josephus, since Eden-to communicate with the animals.
~ Carl Sagan