<p>This paper first investigates Kuznets's and Kremer's definitions of Malthusian to determine whether they align with Malthus's own. Kuznets defined it as the notion that population growth reduces per capita income, supposedly based on Principle of Population. However, in Principles of Political Economy, Malthus described economic growth as as a phenomenon where population growth coincides with rising per capita income, contradicting Kuznets's definition. Kremer defined Malthusian as the argument that technological development, by increasing per capita income, determines the population growth rate. Malthus acknowledged that increased income strengthens labor demand, enabling population growth—suggesting that income levels impact population growth. However, he also argued that hardships and the desire to escape poverty drive people to acquire new knowledge while enhancing productivity. Extending this discussion, the idea follows that competition for better lives motivates hard work. Therefore, Malthus did not logically deny thet population growth can encourage technological development. Malthus's analysis of economic growth shifted from viewing productivity as a limitting factor relative to population in Principle of Population to the constraint of effectual demand caused by unequal income distribution in Principles of Political Economy. He focused on rent distributed to landlords. The analysis of a mathematical model supports aspects Malthus's argument: in an economy with a high rent share, population growth slows both technological development and population growth itself. In contrast, in an economy with a low rent share, population growth accelerates both technological debelopment and population growth.</p>