Answer:
Adored by few, feared and hated by many. Mistress of the entire universal reason, master in the art of numbers. Some may have solved many of my mysteries, but there are still many of them to find. What am I?
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?
Late afternoons I often bathe. I'll soak in water piping hot. My essence goes through. My see through clothes. Used up am I - I've gone to pot.
I drift forever with the current and flows to your everyday life. I make living easy but I am good at killing people too.
What is black when you buy it, red when you use it, and gray when you throw it away?
Written on with words of white, Has the color of the night, Is the teacher's best delight, And a student's daily fright