"Don't you see it's not necessary?
Don't you see that we're both in the same boat?
Yes, and jolly sea-sick." Gregory could not speak, but he could not fire either, and he looked his question.
"Don't you see we've checkmated each other ?" cried Syme.

"I can't tell the police you are an anarchist.

You can't tell the anarchists I'm a policeman.

I can only watch you, knowing what you are; you can only watch me, knowing what I am.

In short, it's a lonely, intellectual duel, my head against yours.