Magic is the practice of ...

Magic is the practice of causing change through the use of powers as yet not defined or accepted by science.
 Scott Cunningham

Quotes from the same author

Any and all religions are real, the genuine article, to their practitioners. There can never be one religion, prophet, or savior that will satisfy all six billion humans. Each of us must find our ideal way to attune with deity.
 Scott Cunningham
Magic is natural. It is a harmonious movement of energies to create a needed change. If you wish to practice magic, all thoughts of it being paranormal or supernatural must be forgotten.
 Scott Cunningham
We can't point at an image of an evil god, such as Satan, and blame it for our faults and weaknesses. We can't blame fate. Every second of each day we're creating our futures, shaping the courses of our lives.
 Scott Cunningham