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

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

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

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.

Secrecy lies at the very core of power.

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

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.

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.

Once suspicion is aroused, everything feeds it.

Even a paranoid can have enemies.

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

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