The third level, in particular the study of the circle, yielded the most fruitful source of basic symbolism.

What did provide a fruitful source of conversation at dinner was the table setting.

The cosmic process, as interpreted by evolution, was for him a fruitful source of inspiration.

Still, Banks had the mobile, and that ought to prove a fruitful source of contact numbers.

But Andersen, which said it was not consulted about the accounting in question, is hardly a fruitful source of potential recovery for any damages.

One fruitful source of research involves investigation into the social conditions that give rise to, or are associated with, meanings and languages.

In the long run the most fruitful and seemingly independent source was that of classical antiquity.

Reading is the most fruitful source, but it all helps.

Annual reports and accounts were a fruitful source of information.

What a fruitful source of suffering to mankind this fact is!