论述了科学、技术、工程的性质与相互关系以及科学家、工程师、企业家的任务；为科学技术创新，发展经济，振兴国家，指出了应采取的对策。

This paper describes science, technology and engineering in respect of their natures and corelations, and points out the tasks of scientist, engineer and entrepreneur. It also proposes the ways and means for promoting scientific and technological innovation, economic development and rejuvenation of China.