Answer:
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
I am the greatest teacher out of them all, but alas in the end I kill my pupils.
Being able to interpret the letters on this screen proves that you have this quality.
The ones who see it may go blind, Contracting the fool's madness. You have to dig to find it, Crush big stones or mine it. Wash dirt clumps in a pan and wait for it to settle, A shiny, precious metal.
I have five letters and people eat me. When you remove my first letter I become a crime. Remove my first two letters and I am an animal. If you remove my first and last letters I'm a form of music
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?