Why?" Dallben interrupted. "In some cases," he said, "we learn more by looking for the answer to a question and not finding it than we do from learni… - Lloyd Alexander

In some cases we learn more by looking for the answer to a question and not finding it than we do from learning the answer itself.

we learn more by looking for the answer to a question and not finding it than we do from learning the answer itself.

Go back' Taran shouted at the top of his voice.'Have you lost your wits?'
Eilonwy, for it was she, half-halted. She had tucked her plaited hair under a leather helmet. The Princess of Llyr smiled cheerfully at him. 'I understand you're upset,' she shouted back, 'but that's no cause to be rude.' She galloped on.
For a time, Taran could not believe he had really seen her.

That's another thing about emperors—and regents," Gareth said. "They aren't very fond of changes, even if the changes are for the better.

"Ah, Princess," Dallben said, with a furrowed smile, "a crown is more discomfort than adornment. If you have learned that, you have already learned much."