A nail in the wound.

A nail in the wound.

Diamonds cut diamonds.

Diamonds cut diamonds.

A flea in his ear.

A flea in his ear.

Something given that way.

Something given that way.

To grow a philosopher's beard.

To grow a philosopher's beard.

To be praised by a man who has won his laurels.

To be praised by a man who has won his laurels.

Leap out of the frying pan into the fire.

Leap out of the frying pan into the fire.

To build castles in Spain.

To build castles in Spain.

To cut a whetstone with a razor.

To cut a whetstone with a razor.