There is no substitute for education and knowledge.

One day, a teacher asked a student in class, “Tell me, why is the world so round?” The teacher thought that the student would definitely answer science. But the student lowered his head and said, “Sir, I didn’t bring my book with me today, so I can’t answer.” The whole class laughed. The teacher also laughed and said, “If you don’t bring your book, you won’t bring your knowledge.” Then he explained that if you study regularly, you can answer any question with confidence. The student realized his mistake and vowed to never come to school without a book again and to study hard.