Logic is like the sword - those who appeal to it, shall perish by it.

All they that take the sword, shall perish with the sword

Logic is like the sword--those who appeal to it shall perish by it.

No mistake is more common and more fatuous than appealing to logic in cases which are beyond her jurisdiction.

The sinews of art and literature, like those of war, are money.

We shall perish by guile just as we slew.