"Cold?" Reacher said. "This is nothing." - Lee Child

The protection he relied on for nearly thirty years was based on just two things. The same two things anybody uses to protect against any danger. The same way a nation protects itself against an enemy missile, the same way an apartment dweller protects himself against a burglar, the same way a boxer guards against a knockout blow. Detection and response. Stage one, stage two. First you spot the threat coming in, and then you react to it.

Jack Reacher stayed alive, because he got cautious. He got cautious because he heard an echo from his past. He had a lot of past, and the echo was from the worst part of it.

Long experience had taught me that absolute silence is the best way. Say something, and it can be misheard. Misunderstood. Misinterpreted. It can get you convicted. It can get you killed. Silence upsets the arresting officer. He has to tell you silence is your right but he hates it if you exercise that right. I was being arrested for murder. But I said nothing.