All I can say about Montalvan is he referring the advocates of Malthus Theory, which is the Anti-life and Anti-family who seem not to run of clever, and agenda into every conceivable legislation that they can think of. According to Malthus in the Economic point of view, that he argued that as wages increase within an economy, the birth-rate increases while the death-rate decreases. He reasoned that high incomes allowed people to have sufficient means to raise their children, thus resulting in greater desire to have more children, which increases the population.

In addition, high incomes also allowed people to afford proper medication to fight off potentially harmful diseases, thus decreasing the death rate. As a result, wage-increases caused population to grow as the birth-rate increases and the death-rate decreases.

He further argued that as the supply of labor increases with the increased population-growth at a constant labor demand, the wages earned would decrease eventually to subsistence, where the birth rate equals the death rate, resulting in no growth in population. However, the world generally has experienced quite a different result than the one Malthus predicted.

Malthus assumed a constant labor-demand in his assessment of England, and in doing so, he ignored the effects of industrialization. As the world became more industrialized, the level of technology and production grew, causing an increase in labor-demand. Thus, even though labor-supply increased, so did the demand for labor. In fact, the labor-demand arguably increased more than the supply, as measured by the historically observed increase in real wages globally with population growth.

In addition, Malthus have a great contribution in the economics which the theory of population. According to Malthus, population tends to increase faster than the supply of food available for its needs. Whenever a relative gain occurs in food production over population growth, a higher rate of population increase is stimulated; on the other hand, if population grows too much faster than food production, the growth is checked by famine, disease, and war. Malthus's theory contradicted the optimistic belief prevailing in the early 19th century, which a society's fertility would lead to economic progress. Malthus's theory won supporters and was often used as an argument against efforts to better the condition of the poor.