The power of words

One day a young Thomas Edison came home from school and my mother handed over a letter from the teacher.
Mother son read a letter aloud, with tears in his eyes: "Your son - a genius. This school is too small and there are no teachers, it can learn something. Please teach it themselves."
Many years after his mother's death (Edison had already been one of the greatest inventors of the century), he somehow revisited old family archives and came across this letter.
He opened it and read:
"Your son - retarded. We can not teach it in school with them. Therefore, we recommend that you learn it yourself at home."
Edison sobbed for hours. Then he wrote in his diary: "Thomas Alva Edison was mentally retarded child. Thanks to their heroic mother, he became one of the greatest geniuses of his age."