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

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

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.

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

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

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

We must not always talk in the marketplace of what happens to us in the forest.

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

Even a paranoid can have enemies.

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

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

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