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

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

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

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

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.

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

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

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

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.

Even a paranoid can have enemies.

Secrecy lies at the very core of power.