They swam away through the darkening water. S'reee set the pace; it was a quick one. “Why did we have to leave in such a hurry?” Kit said.
“There aren't many wizardries more powerful than a Calling,” S'reee said as she led them away. “He'll weave those whales' names into his spell, and if they agree to be part of the Song, the wizardry will lead them to the place appointed, at the proper time.”
“Just by singing their names?”
“K!t, that's plenty. Don't you pay attention when someone calls you by your name? Your name is part of you. There's power in it, tied up with the way you secretly think of yourself, the truth of the way you are. Know what a person's name means to him, know who he feels he is – and you have power over him. That's what Aroooon is using.”
That was a bit of information that started Nita's thoughts going in nervous circles. How do I think of myself? And does this mean that the people who know what I think can control me? I'm not sure I like this...
— Deep Wizardry (Diane Duane)