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

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

There is nothing more deceptive than an obvious fact.

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.

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.

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

Even a paranoid can have enemies.

Nothing is hidden from the eyes of the observing world.

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.

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.

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