Eleanor Saitta:

The decentralized mind-set does not come naturally to companies or governments.

James Comey:

The haystack is the entire country.

Austin Berglas, head of cyber investigations at K2 Intelligence:

China is everywhere.

Hong Lei, Chinese Foreign Ministry:

Cyberattacks are anonymous, cross-border and hard to trace. If you keep using the words "maybe" or "perhaps" without making a thorough study, this is irresponsible and unscientific.

John Hultquist, the senior manager of online espionage threat intelligence at iSight:

We're in a new space here.

Oded Margalit:

Collect all the information you can lay your hands on. In this era of big data, the more you have, the better you can find the things you should be looking for.

Shelby Foote:

I can't begin to tell you the things I discovered while I was looking for something else.

Roderick Usher:

Said I not that my senses were acute?

Mattathias Schwartz:

The government has decided to resume the metadata program on new legal footing, but it hasn't yet made a full accounting of its costs.

Justin Fishel, Pierre Thomas, Mike Levine, and Jack Date:

A DHS inspector general's review determined that despite spending $540 million for checked baggage screening equipment and another $11 million for training since a previous review in 2009, the TSA failed to make any noticeable improvements in that time.

Michael Barr:

On the whole, the safety architecture is a house of cards.

Samantha Power:

There are great benefits to connectedness, but we haven't wrapped our minds around the costs.

Richard Holbrooke:

Only with hindsight can one look back and see that the smartest course may not have been the right one.