略论投资概念的内含与外延李昌清在有关投资的各类著述中，大都标明了投资的概念和定义，说法颇多，谈者自取。本文旨在从投资的本质属性出发，联系投资的多样化形式和发展变化的内容，力图较为科学合理地阐述投资的理论概念，并对一些有代表性的投资的概念和定义谈谈粗浅... A Brief Discussion on the Connotation and Outreach of Investment Concept Li Changqing has mostly stated the concept and definition of investment in all kinds of investment-related writings. The purpose of this paper is to set out from the essential nature of investment, to relate the diversified forms of investment and the content of development and change, to try to explain the theoretical concepts of investment more scientifically and rationally, and to talk about the concepts and definitions of some representative investments. .