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

There is nothing more deceptive than an obvious fact.

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

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

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

Even a paranoid can have enemies.

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

Once suspicion is aroused, everything feeds it.

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