Human Traits and their Social Significance | Page 4

process is discussed in detail in chapters III and XIV.]
But in his structure and functions man bears, as is now well known, a marked resemblance to the lower animals. His respiratory and digestive organs, for example, may be duplicated as far down in the animal scale as birds and chickens.[2] Man's whole physical apparatus and mode of life, save in complexity and refinement of operations, are the same as those of any of the higher mammals. But more important for the student of human behavior, man's mental life--that is, his way of responding to and dealing with his environment--is in large part identical with that of the lower animals, especially of the most highly developed vertebrates, such as the monkey. They have, up to a certain point, precisely the same equipment for adjusting themselves to the conditions of life. Apart from education, both man and animal are endowed with a set of more or less fixed tendencies to respond in specific ways to specific stimuli. These inborn or congenital tendencies are generally known as reflexes or instincts.[1] These are unlearned ways, exhibited by both human and animal organisms, of responding promptly and precisely, and in a comparatively changeless manner to a given stimulus from the environment. These tendencies to act, while they may be, and most frequently are of advantage to the organism, are not conscious or acquired. They are irresistible impulses to do just such-and-such particular things in such-and-such particular ways when confronted with just such-and-such particular situations. In the well-known words of James:
[Footnote 2: With certain modifications accounted for in their historical "descent" with modification from a common ancestor. See Scott: Theory of Evolution.]
[Footnote 1: The difference between the two is largely one of complexity. By a reflex is meant a very simple and comparatively rigid response; by an instinct a series of reflexes such that when the first is set off, the remainder are set off in a regularly determinate succession.]
The cat runs after the mouse, runs or shows fight before the dog, avoids falling from walls and trees, shuns fire and water, etc., not because he has any notion either of life or death, or of self-preservation. He has probably attained to no one of these conceptions in such a way as to react definitely upon it. He acts in each case separately, and simply because he cannot help it; being so framed that when that particular running thing called a mouse appears in his field of vision he must pursue; that when that particular barking and obstreperous thing called a dog appears there he must retire, if at a distance, and scratch if close by; that he must withdraw his feet from water, and his face from flame.[2]
[Footnote 2: James: Psychology, vol. II, p. 384.]
Similarly, the baby's reaching for random objects, and sucking them when seized, its turning its head aside, when it has had enough food, its crying when alone and hungry, are not, for the most part, deliberate methods invented by the infant to maintain its own welfare, but are almost as automatic as the number of sounds omitted by the cuckoo clock at midnight.
Why do men always lie down, when they can, on soft beds rather than on hard floors? Why do they sit round the stove on a cold day? ... Why does the maiden interest the youth so that everything about her seems more important and significant than anything else in the world? Nothing more can be said than that these are human ways, and that every creature likes its own ways, and takes to the following of them as a matter of course.... Not one man in a billion, when taking his dinner, thinks of utility. He eats because the food tastes good, and makes him want more. If you ask him why he should want to eat more of what tastes like that, instead of revering you as a philosopher, he will probably laugh at you for a fool.[1]
[Footnote 1: James: Psychology, vol. II, p. 386.]
These inborn tendencies to act vary in complexity from the withdrawing of a hand from a hot stove or the jerking of the knee when touched in a particular spot to startlingly involved trains of action to be found in the behavior of certain of the lower animals. Bergson cites the case of a species of wasp which with a skill, unconscious though it be, resembling that of the expert surgeon, paralyzes a caterpillar without killing it, and carries it home for food for its young.[2] There are again many cases of "insects which invariably lay their eggs in the only places where the grubs, when hatched, will find the food they need and can eat, or where the larv? will be able to attach themselves as parasites to some host in a