Natural science is a weapon for people to fight for freedom. ——Mao Zedong

All natural scientific knowledge is derived from the needs of actual life. ——Swedish physical chemist Arrhenius' famous sayings about natural science

With spiritual experiments and observations as the basis for research, imagination becomes the designer of natural science theories. —— Tyndall

We not only need political and cultural giants, we also need giants in natural science and other aspects. ——Contemporary poet, playwright, historian, and paleontologist Guo Moruo

In natural science, creating methods and studying certain important experimental conditions is often more valuable than discovering individual facts. ——Russian physiologist Pavlov

Mathematical methods penetrate and dominate all theoretical branches of natural science. It has increasingly become the primary measure of scientific achievement. ——

Princeton, USA, Hungarian mathematical genius von Neumann von Neumann's famous sayings about natural science

Large industry incorporates huge natural forces and natural science into the production process, which will inevitably greatly improve labor productivity. This is clear at a glance. ——German philosopher Marx

As long as natural science is thinking, its development form is hypothesis...Further observation materials will purify these hypotheses, cancel some, revise some, until they finally form pure laws. . ——German philosopher Engels

I believe that today’s science and technology is not just natural science and engineering technology, but an entire knowledge system for people to understand and transform the objective world. The highest summary of this system is Marxist philosophy. —— Qian Xuesen, the founder of China’s aerospace industry

One reason why mathematics is respected more than all other sciences is because its propositions are absolutely reliable and indisputable, while other sciences are often being discovered The danger of overturning the facts. …. Another reason why mathematics has a high reputation is that mathematics enables natural science to achieve theoremization and gives natural science a certain degree of reliability. —— German-Jewish American physicist Einstein