A Wizard of Earthsea
How we cite our quotes:
As he came to the bank Ogion, waiting, reached out his hand and clasping the boy's arm whispered to him his true name: Ged. (1.48)
Ogion tells Ged his true name, but maybe this is one of those times when the wizard can see the truth of the universe, as Ged does with Vetch's sister (10.14). In other words, Ged doesn't get to choose who he really is.
"Have you never thought how danger must surround power as shadow does light? This sorcery is not a game we play for pleasure or for praise. Think of this: that every word, every act of our Art is said and is done either for good, or for evil. Before you speak or do you must know the price that is to pay!" (2.48)
Ogion presents the case for Balance, which is that every action has a consequence. In other words, Ged needs to think before he acts.
"I would keep you here with me, for what I have is what you lack, but I will not keep you against your will. Now choose between Re Albi and Roke." (2.52)
Right after Ogion gives Ged a little lesson in how choices have consequences, he presents Ged with a serious choice: stay with me or go to Roke. And, of course, Ged chooses incorrectly. But even though Ogion wants to keep Ged with him, he doesn't have the right to make that choice since it's about Ged's life, not his.