Principle of population (from wikipedia)

Malthus's views were largely developed in reaction to the optimistic views of his father and his associates, notably Rousseau and William Godwin. In An Essay on the Principle of Population, first published in 1798, Malthus made the famous prediction that population would outrun food supply, leading to a decrease in food per person. (Case & Fair, 1999: 790).

"The power of population is so superior to the power of the earth to produce subsistence for man, that premature death must in some shape or other visit the human race. The vices of mankind are active and able ministers of depopulation. They are the precursors in the great army of destruction; and often finish the dreadful work themselves. But should they fail in this war of extermination, sickly seasons, epidemics, pestilence, and plague, advance in terrific array, and sweep off their thousands and tens of thousands. Should success be still incomplete, gigantic inevitable famine stalks in the rear, and with one mighty blow levels the population with the food of the world."

This Principle of Population was based on the idea that population if unchecked increases at a geometric rate (i.e. 2, 4, 8, 16, 32, 64, 128, etc.) whereas the food supply grows at an arithmetic rate (i.e. 1, 2, 3, 4, 5, 6, 7, 8, etc.).

Only natural causes (eg. accidents and old age), misery (war, pestilence, and above all famine), moral restraint and vice (which for Malthus included infanticide, murder, contraception and homosexuality) could check excessive population growth. See Malthusian catastrophe for more information.

Malthus favoured moral restraint (including late marriage and sexual abstinence) as a check on population growth. However, it is worth noting that Malthus proposed this only for the working and poor classes. Thus, the lower social classes took a great deal of responsibility for societal ills, according to his theory. Essentially what this resulted in was the promotion of legislation which some claim degenerated the conditions of the poor in England, but may have discouraged increases in poverty.

Malthus himself noted that many people misrepresented his theory, and took pains to point out that he did not just predict future catastrophe. He argued "...this constantly subsisting cause of periodical misery has existed ever since we have had any histories of mankind, does exist at present, and will for ever continue to exist, unless some decided change takes place in the physical constitution of our nature."

Thus, Malthus regarded his Principle of Population as an explanation of the past and the present situation of humanity, as well as a prediction of our future.

Additionally, many have argued that Malthus did not recognise the human capacity to increase our food supply. On this subject Malthus wrote "The main peculiarity which distinguishes man from other animals, is the means of his support, is the power which he possesses of very greatly increasing these means."

(full article @ link below)
en.wikipedia.org/wiki/Thomas_Malthus
en.wikipedia.org/wiki/Malt...atastrophe

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On October 12, 1999, United Nations demographers lamented the symbolic birth of planet Earth’s six-billionth resident. The world’s population had doubled from three billion in less than 50 years. And, though the rate of growth is slowing, population is projected to reach nine billion in another 50 years (Population Division, 1999). Many planners express the traditional Malthusian fears that the earth’s ability to feed, clothe, and provide other necessities of life for humanity’s growing numbers will soon be surpassed...

(full article @ link below)
www.cei.org/gencon/019,03109.cfm