I want to hear all about life on the knife edge.

A direct blow with the knife edge of your hand can cause death.

"You are asking these plants to run their process on the knife edge," he said.

"The negotiations at present are on a knife edge," he said.

With the economy on its current knife edge a policy of raising interests rates would not be a good idea.

He launched himself off the ground, the knife edge of his hand extended.

The entire situation was balanced on a knife edge; things could go in either direction.

Negotiations over public sector are said to be "on a knife edge".

The lines were as real and stronger than the hard steel of a knife edge.

Life is often like that, the best balancing on a knife edge with the worst.