Aristotle began to learn from Plato at the age of 17, and studied with him for 20 years. Aristotle has great respect for his teacher. They are good friends. But in the pursuit of truth, Aristotle bravely and resolutely criticized the teacher's mistakes and shortcomings, and there were serious differences with Plato in the content and method of philosophical thinking. So someone accused him of betraying his teacher, and Aristotle responded with a famous saying that has been passed down to this day: ".

The understanding of this famous saying is: disciples don't have to be inferior to teachers, and teachers don't have to be superior to disciples, so master knowledge and skills, that's all. Students don't have to be worse than teachers, and teachers don't have to be better than students. People have different interests and respect teachers, but they should respect objective laws and truth.