Answer:
I am your most powerful weapon; I come before your eyes. I help you seek the truth, yet I often give you lies. What am I?
The more of me you take, the more I appear behind you. What am I?
I am easy to waste and unstoppable. What am I?
I am milky white and scares people.
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
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.