For all teachers, leaders, parents, actually everybody: take a look at the wonderful clip of Benjamin Zander on Youtube (write his name + shining eyes and you will find it). A few quotes:

My job is to awaken possibilities in other people. If the eyes are shining, you are doing it. If not, who am I being that their eyes aren't shining. It's not about wealth, nor succes nor fame. It's about how many shining eyes I see.