政治经济学是研究生产关系的科学,部门经济学和大部分自然科学是研究生产力和自然的科学。研究的目的是认识自然,认识社会,掌握社会、自然、人类自身及其相互间运行发展的内在奥秘和客观规律,促进社会和自然界更好地发展,促进人们过上更好的生活。 Political economy is the science that studies the relations of production, and departmental economics and most of the natural sciences are the science that studies productivity and nature. The purpose of the study is to understand nature, understand the society, grasp the inner mysteries and objective laws of society, nature, human beings themselves and their interdependence and development, promote the better development of society and nature and promote better life for people.