Codes are a puzzle. A game, just like any other game.

Advice about keeping secrets. It’s a lot easier if you don’t know them in the first place.

Even a broken clock is right twice a day.

When people talk to each other, they never say what they mean. They say something else, and you’re expected to just know what they mean.

Hardest time to lie to somebody is when they’re expecting to be lied to.