What Book? 10

Name the book and the context of each quote.

 "It was made to be impossible. But you needn't give up on that account." Robin McKinley.

 "Everything in life is unusual until you get accustomed to it." L.Frank Baum.

 "No man can be fully efficient if he expects praise or appreciation for what he does." Murray Leinster.

"Then I'll tell the truth. We're allowed to do that, in emergencies." Orson Scott Card.  

"Hope was an addiction." David Brin.  

"I knew I had to learn his secret, but I couldn't just ask him or he'd know I didn't know." Roger Zelazny. 

"I learned to Heal my own injuries just so I could stay alive." Bowling.