Answer:
Give it food and it will live, give it water and it will die.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own. What are they?
Look into my face and I'm everybody. Scratch my back and I'm nobody.
My coat keeps me safe From damage thatβs near. I cause you happiness, sadness, Anticipation and fear. On the outside, I am put under judgment of price. But my insides have far more value That not even MONEY can suffice.
What covers its face with its hands, speaks no language, yet most known what it's saying?