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

Once suspicion is aroused, everything feeds it.

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

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.

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

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

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

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

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

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

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

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

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