It's good to want to teach others things you know.
John is a guitar prodigy who learned how to play guitar at a young age and is now considering tutoring for money.
John needs to make some money.
John decides to start his own tutoring business for young students.
John decides to get a job as a mechanic instead, keeping his talents all to himself.
John's tremendous skill is passed on in part to his willing students.
John's musical skills are not appreciated by society at large.