The key to the four modernizations is the modernization of science and technology. Without modern science and technology, it is impossible to build modern agriculture, modern industry or modern national defence. Without the rapid development of science and technology, there can be no rapid development of the economy. The Central Committee of the Party decided to call this national science conference in order to bring home to the Party and country the importance of science, to map out a programme, to commend advanced units and individuals and to discuss measures for speeding up the development of science and technology in China.