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

The first duty of a good inquisitor is to suspect especially those who seem sincere to him.

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

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

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

Once suspicion is aroused, everything feeds it.

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

There is nothing more deceptive than an obvious fact.

Secrecy lies at the very core of power.