What's needed to satisfy public curiosity about this ancient riddle is to raise the level of discussion and pursue more sophisticated research.

It was the ancient riddle of the dreaming butterfly, which came to haunt him from time to time.

He considered the problem, murmured the stricture of an ancient riddle from An:

The answer is like some ancient riddle.

It was a song of his own weaving, shaped of ancient riddles and the answers he had learned for them.

He presented one of the classic ancient riddles.

To all appearances, the ancient riddle had been solved.

Locked chambers go back to that pair of ancient riddles,"What is the room you leave without entering?

Pray that men like my son can resolve the ancient Mayan riddle.

It stood like some half-forgotten memory, or the fragments on a torn page of ancient, incomplete riddles.