Answer:
I have no voice but I can teach you all there is to know. I have spines and hinges but I am not a door. Once I've told you all, I cannot tell you more. What am I?
The more you take away from it the larger it becomes. What is it?
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
I am the ultimate killing machine used not once but TWICE I can be made by humans.
Little Nancy Etticote in a white petticoat. With a red nose; the longer she stands the shorter she grows.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.