Answer:
What can you share and still have all for yourself?
What is the freedom of birds and the pen of old men?
Used left or right, I get to travel over cobblestone or gravel. Used up, I vie for sweet success, used down, I cause men great duress.
What can you throw but not catch?
This is needed both for courage and hardcover books.
What covers its face with its hands, speaks no language, yet most known what it's saying?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?