Marx once called Aristotle the most learned figure among ancient Greek philosophers, and Engels called him "the ancient Hegel". Aristotle contributed to almost every subject. His works cover ethics, metaphysics, psychology, economics, theology, politics, rhetoric, natural science, education, poetry, customs and Athenian law.

Aristotle's works constructed the first extensive system of western philosophy, including morality, aesthetics, logic and science, politics and metaphysics. Therefore, it is known as an encyclopedic scholar.

Aristotle's contribution:

1, Aristotle is a master of Greek classical culture, and Engels called him the most knowledgeable person. His works are ancient encyclopedias, and it is said that there are 400 to 1000 copies.

2. In physics, Aristotle's most important contribution is to create the name of this subject. The modern Latin word "Physica" for the word "physics" comes from the Greek word Φ ν ι ζ (nature). In addition, he made a reasonable estimate of the size of the earth at that time.

3. Aristotle made a lot of investigations on the wonderful biological world by scientific methods. He led his assistant to travel around the country, collecting specimens, classifying them and learning as much as possible about animals and plants.

4. In addition, Aristotle made some preliminary observations and explanations on the physical phenomena such as rainbow, vision, the relationship between pipe length and music, and he also proved that the earth is round from the solar eclipse and the change of constellations.