“I know too well how dangerous hope can be, how it grows and sometimes dies, taking its host with it. It's more powerful than anything Dr.Fibs keeps in his labs, more precious than all the secrets inside Sublevel Two.”

“I thought about how there are two types of secrets: the kind you want to keep in, and the kind you don't dare to let out.”

“Every decent con man knows that the simplest truth is more powerful than even the most elaborate lie.”

“How Not to Break Into Sublevel Two(A list by Cameron Morgan, with help from Macey McHenry)....-Teleportation: Sure, Liz says she has an excellent working theory, but she doesn't have a prototype yet. And without a prototype it's pretty much a moot point.-That thing Bex's parents did in Dubai with liquid nitrogen, an earthquake simulator, and a ferret: Because we don't have a ferret.”

“The things that are most precious to us are sometimes the most secret.”

“I know in the spy movies it always looks really cool when the operative goes from a maid's uniform to a slinky, sexy, ballgown in the amount of time it takes an elevator to climb three floors. Well, I don't know how it is for TV spies, but I can tell you that even with Velcro, the art of the quick change is one that must take a lot of practice (not to mention better lighting than one is likely to find in a tunnel that was once part of the underground railroad).”

“There are some secrets we keep because we can't bear to let them out and some because it's better to keep them in.”