I've lost the best source of knowledge I could ever have.

Their only source of knowledge about Europe and the world is television.

He seemed to be saying that She was the source of all his knowledge.

He's also the village's main source of knowledge on the greater world.

They will be a source of knowledge about what is happening in any given industry.

But perhaps I ought to try to find the source of his knowledge.

The problem was that the usual sources of her knowledge were natural ones.

We also felt that the interactions between different sources of knowledge was still far from clear.

The book symbolizes the school itself as the source of knowledge and education.

Only recently have other sources of historical knowledge received more attention, in particular archaeology.