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

Secrecy lies at the very core of power.

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

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

Secrets define us, they mark us, they set us apart from all the others. The secrets which we preserve provide a key to who we are, deep down.

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.

Once suspicion is aroused, everything feeds it.

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