Books in the running brooks......

Sweet are the uses of adversity, 
Which, like the toad, ugly and venomous,
Wears yet a precious jewel in his head; 
And this our life, exempt from public haunt, 
Finds tongues in trees, books in the running brooks, 
Sermons in stones, and good in everything. 
I would not change it.

As you like it.   Act 2, Scene 1.