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

- Aeschylus, c. 458 BC

Secrecy lies at the very core of power.

- Elias Canetti, 1960

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

- Quentin Crisp, 1968

It was funny how I could feel all alone and under surveillance at the same time.

- Cory Doctorow, 2013

There is nothing more deceptive than an obvious fact.

- Arthur Conan Doyle, 1891

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

- Umberto Eco, 1980

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

- George Eliot, 1860

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

- Benjamin Franklin, 1735

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

- Nathaniel Hawthorne, 1850

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

- William Hazlitt, 1823

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

- George Herbert, c. 1621

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

- P.D. James, 1992

Even a paranoid can have enemies.

- Henry Kissinger, 1977