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There will always be spies. We have to have them. Without them we wouldn't have got Osama bin Laden - it took us years, but it happened.

When sorrows come, they come not single spies, but in battalions.

We need spies that look like their targets, CIA officers who speak the dialects terrorists use, and FBI agents who can speak to Muslim women who might be intimidated by men.

You basically have a group of four spies who are chosen for a mission they feel for the fact of how competent they are and how their expertise and they're the right one for the job. But ultimately they find out they've been actually chosen for their incompetence.

From infancy on, we are all spies; the shame is not this but that the secrets to be discovered are so paltry and few.

Spy novels are traditionally about lone wolves, but how many people actually live like that?

Neighbors are competitors instead of partners, suspicious instead of trustful, indifferent instead of helpful, cold instead of loving, greedy instead of generous. We no longer consider ourselves living in neighborhoods, but only as living next to 'hoods.'

Every man has a certain sphere of discretion which he has a right to expect shall not be infringed by his neighbours. This right flows from the very nature of man.

A man prone to suspect evil is mostly looking in his neighbor for what he sees in himself.