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.

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

If you read somebody’s diary, you get what you deserve.

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

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

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.

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

Nothing is hidden from the eyes of the observing world.

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

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.

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.