Very short and very beautiful story about human ambitions

One day a schoolteacher asked everyone in the class – “What would you want to be when you grow up?”

One pupil said they want to be a professor, another said “a doctor”, another one ” a soldier”… “engineer” … “spaceman”…

When it came to the last one – he said “I want to be happy”.

“I’m afraid that you haven’t understood my question” – teacher replied.

“Yes, I understood it correctly, but I’m afraid you do not understand life” – replied the boy.