Happiness, for you we walk on a knife edge. To the eyes you are a flickering light, to the feet, thin ice that cracks; and so may no one touch you who loves you. Eugenio Montale
We can know nothing till after this grave debate. The soul must withdraw, for this is not its hour. Now the knife must divide the flesh, and lay the ravage bare, and do its work completely. Georges Duhamel
The most famous example of a multi-function knife is the Swiss Army knife, some versions of which number dozens of functions and are really more of a folding multi-tool, incorporating a blade or two, than a penknife with extras.
The expression of the Count's face was so hellish, that for a moment I feared for Harker, though I saw him throw the terrible knife aloft again for another stroke.
When about fifteen I once made a great scandal by taking out my knife in prayer meeting and assaulting a young man who, while I was kneeling down during the prayer, stood above me and squeezed my neck. Simon Newcomb
We all looked on with horrified amazement as we saw, when he stood back, the woman, with a corporeal body as real at that moment as our own, pass through the interstice where scarce a knife blade could have gone.
I haven't got a car or a house. I've got a wife, but I didn't pay for her! I spend all my money on my glorious wife. She's here with a knife at my throat! Mackenzie Crook