If you read somebody’s diary, you get what you deserve.

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.

The life of spies is to know, not be known.

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

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

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

Nothing is hidden from the eyes of the observing world.

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

Secrecy lies at the very core of power.

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.

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