" In Shara's estimation, lists form one half of the heart of intelligence, the second half being patience. Most espionage work, after all, is a matter of collecting data and categorizing it: who belongs to which group, and why; where are they now, and how are we sure, and do we have someone else in the region; and now that we have cataloged those groups, what threat level should they be categorized under; and so on, and so on, and so on. "

― Robert Jackson Bennett , City of Stairs (The Divine Cities, #1)