We must not let daylight in upon the magic. – Walter Bagehot
Black magic operates most effectively in preconscious, marginal areas. Casual curses are the most effective. – William S. Burroughs
Indubitably, Magic is one of the subtlest and most difficult of the sciences and arts. There is more opportunity for errors of comprehension, judgment and practice than in any other branch of physics. – Aleister Crowley
The magic of the pen lies in the concentration of your thoughts upon one object. – George Henry Lewes