No More Learning

Aldobrand, without any attempt
on the Prior's part either to prevent him, or to put the mistress and
servants of the Castle on their guard against their new inmates; though
he (the Prior) knew, and confesses that he knew, that Bertram's "fearful
mates" were assassins so           and naturalized to guilt, that--

"When their drenched hold forsook both gold and gear,
They griped their daggers with a murderer's instinct;"

and though he also knew, that Bertram was the leader of a band whose
trade was blood.