A weeping woman is a bucket with no bottom. Robert Jordan
It was a fine cry - loud and long - but it had no bottom and it had no top, just circles and circles of sorrow. Toni Morrison
Nihilism had no bottom. For thousands of years every philosopher had stood on the shore of this sunless sea, diving for pearls and never finding them. All had seen that, since they could not find bottom, they must assume it. Henry Adams
The sack of longing has no bottom. Japanese Proverb
The beggar's wallet has no bottom. Italian Proverb
Do not wade where you can see no bottom. Danish Proverb