In Russia the old-fashioned, 1984 -style dictatorship of Stalin has begun to give way to a more up-to-date form of tyranny. In the upper levels of the Soviets' hierarchical society the reinforcement of desirable behavior has begun to replace the older methods of control through the punishment of undesirable behavior. Engineers and scientists, teachers and administrators, are handsomely paid for good work and so moderately taxed that they are under a constant incentive to do better and so be more highly rewarded. In certain areas they are at liberty to think and do more or less what they like. Punishment awaits them only when they stray beyond their prescribed limits into the realms of ideology and politics. It is because they have been granted a measure of professional freedom that Russian teachers, scientists and technicians have achieved such remarkable successes. Those who live near the base of the Soviet pyramid enjoy none of the privileges accorded to the lucky or specially gifted minority. Their wages are meager and they pay, in the form of high prices, a disproportionately large share of the taxes. The area in which they can do as they please is extremely restricted, and their rulers control them more by punishment and the threat of punishment than through non-violent manipulation or the reinforcement of desirable behavior by reward. The Soviet system combines elements of 1984 with elements that are prophetic of what went on among the higher castes in Brave New World .
Meanwhile impersonal forces over which we have almost no control seem to be pushing us all in the direction of the Brave New World ian nightmare; and this impersonal pushing is being consciously accelerated by representatives of commercial and political organizations who have developed a number of new techniques for manipulating, in the interest of some minority, the thoughts and feelings of the masses. The techniques of manipulation will be discussed in later chapters. For the moment let us confine our attention to those impersonal forces which are now making the world so extremely unsafe for democracy, so very inhospitable to individual freedom. What are these forces? And why has the nightmare, which I had projected into the seventh century A.F., made so swift an advance in our direction? The answer to these questions must begin where the life of even the most highly civilized society has its beginnings — on the level of biology.
On the first Christmas Day the population of our planet was about two hundred and fifty millions — less than half the population of modern China. Sixteen centuries later, when the Pilgrim Fathers landed at Plymouth Rock, human numbers had climbed to a little more than five hundred millions. By the time of the signing of the Declaration of Independence, world population had passed the seven hundred million mark. In 1931, when I was writing Brave New World , it stood at just under two billions. Today, only twenty-seven years later, there are two billion eight hundred million of us. And tomorrow — what? Penicillin, DDT and clean water are cheap commodities, whose effects on public health are out of all proportion to their cost. Even the poorest government is rich enough to provide its subjects with a substantial measure of death control. Birth control is a very different matter. Death control is something which can be provided for a whole people by a few technicians working in the pay of a benevolent government. Birth control depends on the co-operation of an entire people. It must be practiced by countless individuals, from whom it demands more intelligence and will power than most of the world's teeming illiterates possess, and (where chemical or mechanical methods of contraception are used) an expenditure of more money than most of these millions can now afford. Moreover, there are nowhere any religious traditions in favor of unrestricted death, whereas religious and social traditions in favor of unrestricted reproduction are widespread. For all these reasons, death control is achieved very easily, birth control is achieved with great difficulty. Death rates have therefore fallen in recent years with startling suddenness. But birth rates have either remained at their old high level or, if they have fallen, have fallen very little and at a very slow rate. In consequence, human numbers are now increasing more rapidly than at any time in the history of the species.
Moreover, the yearly increases are themselves increasing. They increase regularly, according to the rules of compound interest; and they also increase irregularly with every application, by a technologically backward society of the principles of Public Health. At the present time the annual increase in world population runs to about forty-three millions. This means that every four years mankind adds to its numbers the equivalent of the present population of the United States, every eight and a half years the equivalent of the present population of India. At the rate of increase prevailing between the birth of Christ and the death of Queen Elizabeth I, it took sixteen centuries for the population of the earth to double. At the present rate it will double in less than half a century. And this fantastically rapid doubling of our numbers will be taking place on a planet whose most desirable and productive areas are already densely populated, whose soils are being eroded by the frantic efforts of bad farmers to raise more food, and whose easily available mineral capital is being squandered with the reckless extravagance of a drunken sailor getting rid of his accumulated pay.
In the Brave New World of my fable, the problem of human numbers in their relation to natural resources had been effectively solved. An optimum figure for world population had been calculated and numbers were maintained at this figure (a little under two billions, if I remember rightly) generation after generation. In the real contemporary world, the population problem has not been solved. On the contrary it is becoming graver and more formidable with every passing year. It is against this grim biological background that all the political, economic, cultural and psychological dramas of our time are being played out. As the twentieth century wears on, as the new billions are added to the existing billions (there will be more than five and a half billions of us by the time my granddaughter is fifty), this biological background will advance, ever more insistently, ever more menacingly, toward the front and center of the historical stage. The problem of rapidly increasing numbers in relation to natural resources, to social stability and to the well-being of individuals — this is now the central problem of mankind; and it will remain the central problem certainly for another century, and perhaps for several centuries thereafter. A new age is supposed to have begun on October 4, 1957. But actually, in the present context, all our exuberant post-Sputnik talk is irrelevant and even nonsensical. So far as the masses of mankind are concerned, the coming time will not be the Space Age; it will be the Age of Over-population. We can parody the words of the old song and ask,