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

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

Once suspicion is aroused, everything feeds it.

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.

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.

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

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