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?
A young man wants to have me but when he has me he no longer wants me. Blade in hand he attacks me and does his best to remove me. Yet he knows that it is all in vain.
I am found on Mercury Venus Earth and Mars but not on Jupiter or Saturn. What am I?
What is brown and sticky?
What can be heard in court or used to carry briefs?
What made Cyclops quit teaching?