John Flanagan

“That taught us how to block a sword with two knives. But what if an ax man's coming at me?"
Gilan looked suspicious. "An ax man? I don't recommend trying to block an ax with two knives."
But Will wouldn't take no for an answer. "But what if he's charging at me?" Horace walked over.
Gilan looked away. "Uh...shoot him."
Horace intervened. "Can't, his bowstring's broken."
Gilan gritted his teeth. "Run and hide."
Will kept on him. "There's a sheer cliff behind me."
Horace caught on. "There's a sheer cliff behind him, and his bowstring's broken. What should he do?"
Gilan thought for a moment. "Jump off the cliff, it'll be less messy that way.”
― John Flanagan, The Burning Bridge

“But what if I make a mistake?' Will asked.

Gilan threw back his head and laughed. 'A mistake? One mistake? You should be so lucky. You'll make dozens! I made four or five on my first day alone! Of course you'll make mistakes. Just don't make any of them twice. If you do mess things up, don't try to hide it. Don't try to rationalize it. Recognize it and admit it and learn from it. We never stop learning, none of us.”
― John Flanagan, Erak's Ransom