The Magician's Oath

The purpose of a magic trick is to amuse and create a feeling of wonder; the audience is generally aware that the magic is performed using trickery, and derives enjoyment from the magician's skill and cunning. Usually, magicians will refuse to reveal their methods to the audience. Because that exposure is claimed to "kill" magic as an art form and transforms it into mere intellectual puzzles and riddles. It is argued that once the secret of a trick is revealed to a person, he or she can no longer fully enjoy subsequent performances of the trick, as the amazement is missing. Sometimes the secret is so simple that the audience is let down they were taken in so easily.
Membership in professional magicians' organizations often requires an oath not to reveal the secrets of magic to non-magicians. This is known as the "Magician's Oath".
The Magician's Oath (though it may vary, 'The Oath' takes the following, or similar form): "As a magician I promise to never reveal the secret of any illusion to a non-magician, without first swearing them to the Magician's Oath. I promise never to perform any illusion for any non-magician, without first practicing the effect until I can perform it well enough to maintain the illusion of magic". Once sworn to The Oath, one is considered a magician, and is expected to live up to this promise. A magician who reveals a secret, either purposely or through insufficient practice, may typically find themselves without any magicians willing to teach them more secrets.
However, it is considered permissible to reveal secrets to individuals who are determined to learn magic tricks and become magicians.