Even a paranoid can have enemies.

A regime which combines perpetual surveillance with total indulgence is hardly conducive to healthy development.

For sooner will men hold fire in their mouths than keep a secret.

I will never again command an army in America if we must carry along paid spies. I will banish myself to some foreign country first.

It was funny how I could feel all alone and under surveillance at the same time.

Three may keep a secret, if two of them are dead.

Spies are of no use nowadays. Their profession is over. The newspapers do their work instead.

There is nothing more deceptive than an obvious fact.

There is a sickness among tyrants: they cannot trust their friends.

Guard more faithfully the secret which is confided to you than the money which is entrusted to your care.

There is nothing makes a man suspect much, more than to know little.

Secrets are rarely betrayed or discovered according to any program our fear has sketched out.

Nothing is hidden from the eyes of the observing world.