Once, a boy came home from school and gave his mother a letter from his teacher. Then the mother cried after reading the letter and read it aloud to her son. He wrote the letter, "Your son is a very intelligent child, so our school is getting smaller for your son. We don't have enough talented teachers to teach your son. Therefore, it is recommended that you take the training on yourself. After that, many years passed and after his mother passed away, this boy was looking through his old photo albums at home and found the other letter. When he read it, the letter said, “Your son is mentally retarded. Therefore, we should not train with other children. Therefore, I recommend that you train him on your own." This boy's name is Thomas Edison, and by the time he reads this letter, he has become a world-class, century-famous inventor. After reading the letter, she cried for hours and wrote the following in her notebook. "Thomas Edison was a child with mental retardation, but thanks to the power of his heroic mother, he became one of the great geniuses of his age. Appreciate your mothers, they are the only ones who can love us as we are and believe in us no matter what," he wrote. Thomas Edison was an inventor and businessman who made discoveries that greatly simplified life and owned thousands of copyrights. was a creator.