He felt that if limited growth were to occur it would be by means of birth control. The Malthusian perspective derives from the writings of Thomas Robert Malthus, and English clergyman and college professor. Malthus s original intention was to show that the unbounded optimism of the physiocrats and philosophers was misplaced. The passion that exists between the sexes is necessary. Population, when unchecked, increases in a geometrical ratio.
Subsistence increases only in an arithmetical ratio.
Because food is necessary to man, the effects of these two unequal powers must be kept in check. Malthus believed that poverty was a result of nature operating through the principle of population. Malthus was the first to draw out in a systematic way that links the consequences of growth to its causes. According to Malthus 1. Human beings are impelled to increase population by a powerful instinct.