The last lesson of the philosopher, read the answer

A philosopher and a group of his students traveled the world. In ten years, they had traveled to many countries and visited many learned people. Now they had returned, all of them full of knowledge. Before entering the city, the philosopher sat down on a meadow in the suburbs and said,"After ten years of traveling, you are all learned people. Now that your studies are about to end, let's have the last lesson!" The disciples sat down around the philosopher. "Where are we sitting now?" asked the philosopher. "We're sitting in the wilderness now," the disciples replied. The philosopher asked again,"What grows in the wilderness?" "Weeds grow in the wilderness," the disciples replied. "Yes," said the Philosopher."The wilderness is full of weeds now, but I want to know how to eradicate these weeds?" The disciples were astonished. They had not expected that the last question of a philosopher who had been devoted to the mystery of life would be such a simple question. "Teacher, you just need to shovel it off with a shovel," said a disciple. The philosopher shook his head. "Using fire is also a good way," another disciple continued. The Philosopher smiled and gestured for the next person. The third disciple said,"I think sprinkling lime will get rid of all the weeds." The fourth disciple said,"To cut grass, you have to remove the roots. You just have to dig them out." When the students had finished, the philosopher stood up and said,"That's all for now. When you go back, uproot a patch of weeds according to your own methods. We'll meet again here in a year." A year later, the disciples all came. However, the place where they gathered was no longer overgrown with weeds. It had become a field full of grain. The disciples sat around the valley, waiting for the philosopher to come, but the philosopher never came. Decades later, when the philosopher passed away, his disciples added a chapter at the end of his speech, saying that there was only one way to get rid of weeds in the wilderness, and that was to plant crops on them. Similarly, the only way to make the soul pure is to occupy it with virtue. 1. What was the main point of the philosopher's last lesson? 2. Explain the meaning of "full of knowledge" in the context, and then write two idioms that contain the word "full". Meaning: Idiom------------------- 3. A year later, the philosopher had yet to arrive. Was he going back on his word? Why? 4. Imagine the situation of the four disciples reuniting at the same place. What changes would their psychological activities have? 5. The last sentence of the article was meaningful. His role in the full text is-------------- Please tell me your understanding of this sentence------------------------ ----------------------------------- 6. What philosophy does this story tell us? (Answer using the words in the text)