The story of Leonardo da Vinci painting eggs: Leonardo da Vinci was a famous Italian painter. When he was a child, one day, the teacher took out an egg and said: "Please draw two identical eggs." Eggs, can you do that?" After that, he left.

Da Vinci thought: What's so easy about eggs, so why is it so difficult? Da Vinci looked at it from this side and that side, and the eggs were still eggs, but he couldn't draw two identical eggs. So, he went to ask the teacher. First of all, the teacher praised him for his careful observation and told him not to underestimate this one egg. In fact, he was thousands of eggs, which were different eggs from different angles. Leonardo da Vinci remembered this sentence and not only painted with his hands, but also painted with his heart. Decades later, he finally became a great painter.

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In the beginning, people only studied Aristotelian theories like the Bible when they learned scientific knowledge, and only believed in written records. Leonardo da Vinci opposed the scholastic philosophers who used past teachings and speeches as the basis of knowledge. He encouraged people to learn from nature and seek knowledge and truth in nature. He believes that knowledge originates from practice and should start from practice and explore the mysteries of science through practice.

He said that "the greatest misfortune is that theory is divorced from practice" and "practice should be based on good theory." Leonardo da Vinci proposed and mastered this advanced scientific method, used this scientific method to conduct scientific research, and made great contributions to natural science.

The method he proposed was later developed by Galileo and theoretically summarized by the British philosopher Bacon, becoming the most basic research method in modern natural sciences. Leonardo da Vinci firmly believed in science. He was disgusted with religion and criticized those in power in the Catholic Church as "a peddler of deceit and lies."

He said: "There is only one truth, and it is not in religion, but in science." Leonardo da Vinci's experimental working methods were later used by Copernicus, Galileo, Kepler, The inventions of Newton, Einstein and others opened up new paths.