Tuy nhiên, kinh tế chủ yếu cho những đóng góp triết học quan trọng cho kinh tế. Giải trình của ông cho hoạt động kinh tế xảy ra mà không g ove rnment, đã được chấp nhận bởi hầu hết các nhà kinh tế trong suốt lịch sử, ngay cả đến ngày hôm nay. | More free books @ factors that raised death rates famine natural catastrophe plague and war. But in the second and subsequent editions of the Essay Malthus added a set of preventive checks sexual abstinence birth control and delayed marriage. These had the effect of lowering birth rates and population growth. Allowing preventive checks on population growth also toned down the pessimistic nature of the economic forecast. But Malthus still held that because of the strong human desire for sexual pleasure population growth could not be reduced very much by preventive checks the conclusion therefore still followed that it was impossible to improve overall economic well-being. The case against Condorcet Owen and Godwin followed simply from this analysis. If wealth and income were distributed more equally as Godwin advocated or if the poor were made better off through various social reforms as Condorcet and Owen suggested working families would respond by having so many children that they would shortly find themselves impoverished again. It is for these reasons that Malthus opposed every attempt to legislate relief for the poor and was opposed to granting charity to the poor. This he thought would only lead to more poor people. Contemporary Malthusians for example Murray 1984 make similar arguments maintaining that government aid merely causes welfare recipients to have more children thus worsening their economic plight. Several years later in a pamphlet entitled An Investigation of the Cause of the Present High Price of Provisions in Malthus 1970 Malthus went even further in arguing against relief for the poor. This work argued that poor relief would also lead to increases in the price of corn in England. Thus not only would poor relief hurt the poor but by raising the price of necessities poor relief would also hurt all British citizens. Although best known for his population doctrine Malthus also made several theoretical and policy contributions to .