This was one of the great moral riddles at the heart of the war in Kosovo.

"What to do with too much information is the great riddle of our time."

The duke nodded as though some great riddle had been solved.

"You have become the great riddle of An," she said, and Raederle looked away from her quickly, down at the ground.

Beneath them lies a greater riddle than the prophecies themselves.

The great riddle of pencil making is too easily answered.

He let out a satisfied sigh, as though he had solved a great scientific riddle.

"There's a greater riddle than any that you've answered, but you can solve it for me."

Then sprang up the wish, directed to the sacred mystery or great riddle of life.

There is even an oil room where those in search of answers to life's great riddles may seek temporary seclusion.