"Tartarus was in a class all by himself. He was more powerful than the gods or Titans. Demigods were nothing to him. If Percy charged to help Bob, he would squashed like an ant. But Annabeth also knew that Percy wouldn't listen. He couldn't leave Bob to die alone. That just wasn't him-and that was one of the many reasons she loved him, even if he was an Olympian sized pain in the podex. "We'll go together.""
January 1, 1970
https://en.wikiquote.org/wiki/Percy_Jackson_%26_the_Olympians