No ordinarily intelligent farmer doubts for a moment that all of this is true in the breeding of stock. He would never expect the same results from various breeds of cattle or even from all cattle of the same breed.
There is no exception to the rule that the whole life, with every tendency, is potential in the original cell. An acorn will invariably produce an oak tree. It can produce no other tree, and it will always develop true to its own pattern. The tree may be larger or smaller, more or less symmetrical, stronger or weaker, but always true to the general pattern of the oak. Variations will be certain, due in part to heredity and in part to environment.
That the baby had nothing to do with its equipment will readily be admitted by everyone. The child is born with a brain of a certain size and fineness. It is born with a nervous system made up of an infinite number of fine fibers reaching all parts of the body, with fixed stations or receivers like the central stations of a telephone system, and with a grand central exchange in the brain. If one can imagine all of the telephone wires in the world centered in one station, he may have some sort of a conception of the separate nerves that bring impressions to the brain and send directions out from it, which together make up the nervous system of man. None of these systems is perfect. They are of all degrees of imperfection down to the utterly useless or worse than useless system. These nerves are of all degrees of sensitiveness and accuracy in receiving and transmitting messages. Some may work well, others imperfectly. No one is much surprised when an automobile, equipped with a mechanism much simpler than the nervous system, refuses to respond properly.
The child is born without knowledge but with certain tendencies, instincts, capacities and potential strength or weakness. His nervous system and his brain may be good or bad—most likely neither very good nor very bad. All of his actions both as a child and as a man are induced by stimulation from without. He feels, tastes, sees, hears or smells some object, and his nerves carry the impression to his brain where a more or less correct registration is made. Its correctness depends largely upon the perfection of the nervous system and the fineness of the material on which the registration is made. Perfect or imperfect, the child begins to gather knowledge and it is stored in this way. To the end of his days he receives impressions and stores them in the same manner. All of these impressions are more or less imperfectly received, imperfectly conveyed and imperfectly registered. However, he is obliged to use the machine he has. Not only does the machine register impressions but it sends out directions immediately following these impressions: directions to the organism as to how to run, to walk, to fight, to hide, to eat, to drink, or to make any other response that the particular situation calls for.
Then, too, stimulated by these impressions, certain secretions are instantly emptied from the ductless glands into the blood which, acting like fuel in an engine, generate more power in the machine, fill it with anger or fear and prepare it to respond to the directions to fight or flee, or to any type of action incident to the machine. It is only within a few years that biologists have had any idea of the use of these ductless glands or of their importance in the functions of life. Very often these ductless glands are diseased, and always they are more or less imperfect; but in whatever condition they are, the machine responds to their flow.
The stored-up impressions are more or less awakened under stimulation. As life goes on, these stored impressions act as inhibitions or stimulations to action, as the case may be. These form the material for comparisons and judgments as to conduct. Not only are the impressions imperfect and the record imperfect, but their value and effect depend on the brain which compares and considers the impressions. From all this mechanism, action is born.
That man is the product of heredity and environment and that he acts as his machine responds to outside stimuli and nothing else, seem amply proven by the evolution and history of man. But, quite aside from this, logic and philosophy must lead to the same conclusions. This is not a universe where acts result from chance. Law is everywhere supreme. Every process of nature and life is a continuous sequence of cause and effect. No intelligent person would ever think of an effect in the physical world which did not follow a cause or causes. It has taken man a long time to find this out. The recurrence of the seasons, the seed-time and harvest, the common phenomena of Nature, were once supposed to be outside the realm of cause and effect and due to the whim of some powerful being. But the laws of matter are now coming to be understood. Chance, accident and whim have been banished from the physical world. The acts of men alone are supposed to be outside the realm of law. There is a cause for the eternal revolution of the earth around the sun, for the succession of seed-time and harvest, for growth and decay; but not for the thoughts and actions of man.
All the teaching of the world is based on the theory that there is no free will. Why else should children be trained with so much care? Why should they be taught what is right and what is wrong? Why should so much pains be taken in forming habits? To what effect is the storing of knowledge in the brain of the child, except that it may be taught to avoid the wrong and to do the right? Man's every action is caused by motive. Whether his action is wise or unwise, the motive was at least strong enough to move him. If two or more motives pulled in opposite directions, he could not have acted from the weakest but must have obeyed the strongest. The same motives applied to some other machine might have produced an opposite result, but to his particular structure it was all-controlling. How any special motive will affect any special machine must depend upon the relative strength of the motive and make of the machine. It is for this reason that intelligent people have always taken so much pains to fortify the machine, so that it would respond to what they believed was right. To say that one could ever act from the weakest motive would bring chaos and chance into a world of method and order. Even punishment could have no possible effect to deter the criminal after release, or to influence others by the example of the punishment. As well might the kernel of corn refuse to grow upward to the sunlight, and grow downward instead.
Before any progress can be made in dealing with crime the world must fully realize that crime is only a part of conduct; that each act, criminal or otherwise, follows a cause; that given the same conditions the same result will follow forever and ever; that all punishment for the purpose of causing suffering, or growing out of hatred, is cruel and anti-social; that however much society may feel the need of confining the criminal, it must first of all understand that the act had an all-sufficient cause for which the individual was in no way responsible, and must find the cause of his conduct, and, so far as possible, remove the cause.