Secrecy lies at the very core of power.

To know all is not to forgive all. It is to despise everybody.

Even a paranoid can have enemies.

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

Once suspicion is aroused, everything feeds it.

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

Secrets define us, they mark us, they set us apart from all the others. The secrets which we preserve provide a key to who we are, deep down.

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

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

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

There is nothing more deceptive than an obvious fact.

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

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