Only for you, children of doctrine and learning, have we written this work. Examine this book, ponder the meaning we have dispersed in various places and gathered again; what we have concealed in one place we have disclosed in another, that it may be understood by your wisdom

--Heinrich Cornelius Agrippa von Nettesheim, De occulta philosophia, 3, 65

Superstition brings bad luck.

--Raymond Smullyan, 5000 B.C., 1.3.8