As it affects the less developed countries, the problem is stated thus: The resources of modern hygiene and medicine will very shortly bring about a notable decrease in the mortality rate, especially among infants, while the birth rate—which in such countries is unusually high—will tend to remain more or less constant, at least for a considerable period. The excess of births over deaths will therefore show a steep rise, whereas there will be no corresponding increase in the productive efficiency of the economy. Accordingly, the standard of living in these poorer countries cannot possibly improve. It must surely worsen, even to the point of extreme hardship. Hence there are those who hold the opinion that, in order to prevent a serious crisis from developing, the conception and birth of children should be secretly avoided, or, in any event, curbed in some way.
Truth to tell, we do not seem to be faced with any immediate or imminent world problem arising from the disproportion between the increase of population and the supply of food. Arguments to this effect are based on such unreliable and controversial data that they can only be of very uncertain validity.
Besides, the resources which God in His goodness and wisdom has implanted in Nature are well-nigh inexhaustible, and He has at the same time given man the intelligence to discover ways and means of exploiting these resources for his own advantage and his own livelihood. Hence, the real solution of the problem is not to be found in expedients which offend against the divinely established moral order and which attack human life at its very source, but in a renewed scientific and technical effort on man's part to deepen and extend his dominion over Nature. The progress of science and technology that has already been achieved opens up almost limitless horizons in this held.
As for the problems which face the poorer nations in various parts of the world, We realize, of course, that these are very real. They are caused, more often than not, by a deficient economic and social organization, which does not offer living conditions proportionate to the increase in population. They are caused, also, by the lack of effective solidarity among such peoples.