A Wizard of Earthsea
How we cite our quotes:
The witch praised him and the children of the village began to fear him, and he himself was sure that very soon he would become great among men. (1.21)
Early on, Ged is described as a proud child (1.3), but it's only later that we see some reasons why he's like that. For instance, here we see that Ged's aunt and the village children treat him as if he's special.
He thought she was mocking him with this question, because the falcon had not fully obeyed his summons. He would not let her mock him. (2.27)
This is definitely part of the problem with pride: if you think you're awesome and others don't, you end up doing things just to prove you're awesome – and some of those things might be dangerous.
Standing there with rage in his heart, looking after Jasper, Ged swore to himself to outdo his rival, and not in some mere illusion-match but in a test of power. He would prove himself, and humiliate Jasper. (3.63)
The first half of this book is like one long demonstration that Ged is overly proud. Here he is, learning magic, and what's he thinking about? How this one kid didn't give him respect. What's really killer about this is that Jasper isn't totally a villain here. In fact, while Ged thinks Jasper's the one who's a proud jerk, Jasper probably thinks the very same thing about Ged. (Want to know more? Check out "Characters: Jasper.")