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

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

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

Nothing is hidden from the eyes of the observing world.

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

Once suspicion is aroused, everything feeds it.

If the world were good for nothing else, it is a fine subject for speculation.

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

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

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

Even a paranoid can have enemies.

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

Secrecy lies at the very core of power.