A spy of that sort can afford to be more reckless than the most reckless of conspirators.

His occupation is free from all restraint.

He's without as much faith as is necessary for complete negation, and without that much law as is implied in lawlessness.

Thirdly, the existence of these spies amongst the revolutionary groups, which we are reproached for harbouring here, does away with all certitude.

You have received a reassuring statement from Chief Inspector Heat some time ago.