Human Evolution Quotes

Advances in technology can be empowering, progressive and enriching. History has shown this across civilisations and societies. But it has also shown, and the present and future will continue to show, that it is foolish, risky, flawed and folly without us raising our individual and collective consciousness and mindfulness to accompany it - to ensure we use it shrewdly, kindly and wisely.

~ Rasheed Ogunlaru

It may be that there are kernels of truth in a few of these doctrines, but their widespread acceptancebetokens a lack of intellectual rigor, an absence of skepticism, a need to replace experiments by desires.

~ Carl Sagan

It is our ultimate purpose to continually evolve as a species both physically and emotionally, as change is the mechanism for growth and development, and if we fear change we stunt our own growth and with it, human evolution.

~ Kat Lahr

We are in an age that assumes the narrowing trends of specialization to be logical, natural, and desirable. Consequently, society expects all earnestly responsible communication to be crisply brief. Advancing science has now discovered that all the known cases of biological extinction have been caused by overspecialization, whose concentration of only selected genes sacrifices general adaptability. Thus the specialist’s brief for pinpointing brevity is dubious. In the meantime, humanity has been deprived of comprehensive understanding. Specialization has bred feelings of isolation, futility, and confusion in individuals. It has also resulted in the individual’s leaving responsibility for thinking and social action to others. Specialization breeds biases that ultimately aggregate as international and ideological discord, which in turn leads to war.

~ R. Buckminster Fuller

What functions do dreams serve today? One view, published in a reputable scientific paper, holds that the function of dreams is to wake us up a little, every now and then, to see if anyone is about to eat us. But dreams occupy such a relatively small part of normal sleep that this explanation does not seem very compelling. Moreover, as we have seen, the evidence points just the other way: today it is the mammalian predators, not the mammalian prey, who characteristically have dream-filled sleep.

~ Carl Sagan

In Egyptian Arabic, the word 'insan' means 'human'. If we remove the 'n', the word becomes 'insa', which means 'to forget'. So you see, the word 'forget' is taken from the word 'human'. And since it was God who created our minds and hearts, He knew from the very beginning that we would quickly forget our history, only to keep repeating the same mistakes over and over again. So the ultimate test of every human is to seek wisdom. After all, wisdom is gained from having a good memory. Only after we have passed this test will we evolve to become better humans. Man is only a forgetful mortal, but God — He sees, hears and remembers everything.

~ Suzy Kassem

This sort of information gathering is precisely what we call play. And the important function of play is thus revealed: it permits us to gain, without any particular future application in mind, a holistic understanding of the world, which is both a complement of and a preparation for later analytical activities.

~ Carl Sagan

Dartmouth College employs computer learning techniques in a very broad array of courses. For example, a student can gain a deep insight into the statistics of Mendelian genetics in an hour with the computer rather than spend a year crossing fruit fliesin the laboratory.

~ Carl Sagan

When all is said and done, the invention of writing must be reckoned not only as a brilliant innovation but as a surpassing good for humanity. And assuming that we survive long enough to use their inventions wisely, I believe the same will be said of the modern Thoths and Prometheuses who are today devisingcomputers and programs at the edge of machine intelligence.

~ Carl Sagan

The entire evolutionary record on our planet, particularly the record contained in fossil endocasts, illustrates a progressive tendency toward intelligence. There is nothing mysterious about this:smart organisms by and large survive better and leave more offspring than stupid ones.

~ Carl Sagan

And despite the insignificance of the instant we have so far occupied in cosmic time, it is clear that what happens on and near Earth at the beginning of the second cosmic year will depend very much on the scientific wisdom and the distinctly human sensitivity of mankind.

~ Carl Sagan

It is interesting that it is not the getting of any sort of knowledge that God has forbidden, but, specifically, the knowledge of the difference between good and evil-that is, abstract and moral judgments, which, if they reside anywhere, reside in the neocortex.

~ Carl Sagan

It is precisely our plasticity, our long childhood, that prevents a slavish adherence to genetically preprogrammed behavior in human beings more than in any other species… Some substantial adjustment of the relative role of each component of the triune brain is well within our powers.

~ Carl Sagan

with rare exceptions (chiefly the social insects), mammals and birds are the only organisms to devote substantial attention to the care of their young; an evolutionary development that, through the long period of plasticity which it permits, takes advantage of the large information-processing capability of the mammalian and primate brains. Love seems to be an invention of the mammals.

~ 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

The time scale for evolutionary or genetic change is very long. A characteristic period for the emergence of one advanced species from another is perhaps a hundred thousand years; and very often the difference in behavior between closely relatedspecies-say, lions and tigers-do not seem very great... But today we do not have ten million years to wait for the next advance. We live in a time when our world is changing at an unprecedented rate. While the changes are largely of our own making, they cannot be ignored. We must adjust and adapt andcontrol, or we perish.

~ Carl Sagan

Evolution is adventitious and not foresighted. Only through the deaths of an immense number of slightly maladapted organisms are we, brains and all, here today.

~ Carl Sagan

a typical chromosomal DNA molecule in a human being is composed of about five billion pairs of nucleotides… But since there are four different kinds of nucleotides, the number of bits of information in DNA is four times the number of nucleotide pairs. Thus if a single chromosome has five billion (5 X 10^9) nucleotides, it contains twenty billion (2 X 10^10) bits of information… We also see that if more than some tens of billions (several times 10^10) of bits of information are necessary for human survival, extragenetic systems will have to provide them: the rate of development of genetic systems is so slow that no source of such additional biological information can be sought in the DNA.

~ Carl Sagan

Somewhere in the steaming jungles of the Carboniferous Period there emerged an organism that for the first time in the history of the world had more information in its brains than in its genes. It was an early reptile which, were we to come upon it in these sophisticated times, we would probably not describe as exceptionally intelligent… Much of the history of life since the Carboniferous Period can be described as the gradual (and certainly incomplete) dominance of brains over genes.

~ Carl Sagan

It is very difficult to evolve by altering the deep fabric of life, any change there is likely to be lethal. But fundamental change can be accomplished by the addition of new systems on top of old ones.

~ Carl Sagan

In the distant future I see open fields for far more important researches. Psychology will be based on a new foundation, that of the necessary acquirement of each mental power and capacity by gradation. Light will be thrown on the origin of man and his history.

~ Charles Darwin

A genius masters the art of observation, and unites with the source of imagination to create advancements in the cause for human evolution.

~ T.f. Hodge

No existing form of anthropoid ape is even remotely related to the stock which has given rise to man.

~ Henry Fairfield Osborn

I am perhaps more proud of having helped to redeem the character of the cave-man than of any other single achievement of mine in the field of anthropology.

~ Henry Fairfield Osborn

It is very difficult to evolve by altering the deep fabric of life; any change there is likely to be lethal. But fundamental change can be accomplished by the addition of new systems on top of old ones…Thus evolution by addition and the functional preservation of the preexisting structure must occur for one of two reasons-either the old function is required as well as the new one, or there is no way of bypassing the old system that is consistent with survival.

~ Carl Sagan

The time scale for evolutionary or genetic change is very long. A characteristic period for the emergence of one advanced species from another is perhaps a hundred thousand years; and very often the difference in behavior between closely related species -say, lions and tigers- do not seem very great... But today we do not have ten million years to wait for the next advance. We live in a time when our world is changing at an unprecedented rate. While the changes are largely of our own making, they cannot be ignored. We must adjust and adapt and control, or we perish.

~ Carl Sagan

Washburn has reported that infant baboons and other young primates appear to be born with only three inborn fears -of falling, snakes, and the dark-corresponding respectively to the dangers posed byNewtonian gravitation to tree-dwellers, by our ancient enemies the reptiles, and by mammalian nocturnal predators, which must have been particularly terrifying for the visually oriented primates.

~ Carl Sagan

The question of the position of man, as an animal, has given rise to much disputation, with the result of proving that there is no anatomical or developmental character by which he is more widely distinguished from the group of animals most nearly allied to him, than they are from one another.

~ Thomas Henry Huxley

Quite recently the human descent theory has been stigmatized as the 'gorilla theory of human ancestry.' All this despite the fact that Darwin himself, in the days when not a single bit of evidence regarding the fossil ancestors of man was recognized, distinctly stated that none of the known anthropoid apes, much less any of the known monkeys, should be considered in any way as ancestral to the human stock.

~ Henry Fairfield Osborn

Nature's stern discipline enjoins mutual help at least as often as warfare. The fittest may also be the gentlest.

~ Theodosius Dobzhansky

Today we are even manipulating the DNA that makes us possible in the first place—a case of evolution evolving new ways to evolve.

~ Chip Walter

Human beings are very skilled at pretending they are not what they are, and ignoring what is inside them. This includes ignoring their natural instincts, their primal instincts, because they have this notion that they are evolving faster than other life, have evolved further, and are therefore superior. Take racism for example. As abhorrent as people may consider it, human beings are essentially tribal, and racism is simply a survival instinct embedded deep inside us, born from thousands of years of survival and experience.

~ Robert Black

MacLean has shown that the R-complex plays an important role in aggressive behavior, territoriality, ritual and the establishment of social hierarchies. Despite occasional welcome exceptions, this seems to me to characterize a great deal of modern human bureaucratic and political behavior.

~ 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

When one contemplates the streak of insanity running through human history, it appears highly probable that homo sapiens is a biological freak, the result of some remarkable mistake in the evolutionary process. The ancient doctrine of original sin, variants of which occur independently in the mythologies of diverse cultures, could be a reflection of man's awareness of his own inadequacy, of the intuitive hunch that somewhere along the line of his ascent something has gone wrong.

~ Arthur Koestler