2. Geometry sometimes seems that essentials precede analysis, but in fact geometry precedes analysis, just like a servant walking in front of his master to open the way for him. Sylvester

3. Fractal geometry not only shows the beauty of mathematics, but also reveals the essence of the world and changes the way people understand the mysteries of nature. It can be said that fractal geometry is a kind of geometry that truly describes nature, and the research on it has greatly expanded the cognitive field of human beings. Zhou Haizhong

4. Descartes' analytic geometry has been extended to Newton's calculus to the singular mathematical methods of Lobachevsky, Riemann, Gauss and Selma Vesto. In fact, mathematics is not only an indispensable tool for all disciplines, but also can fly freely without considering the constraints of intuition. Nicholas Murray Butler