G-d called to Samuel, and Samuel responded, "Here I am."

And he ran to Eli, and said, "Here I am, for you have called me." And Eli said, "I did not call. Go back to sleep." 

In essence, we are given here a blueprint for one of the great challenges and callings in the field of education. Our children hear voices, but we often send them back to sleep, making them believe that the voices were mere imaginary.