The first prerequisite for any practicing magician is arrogance. This is because the magician presumes to join the Creator in His great and ongoing work as co-Creator or sub-Creator, and what mortal man or woman could aspire to such heights without some degree of hubris?
The second prerequisite is humility. This is because magic must always remain, in the end, a little bit beyond our ability to predict and a little bit beyond our ability to control. If it were not, we would not call it magic.
– His Grace Aleister Crowley, Bishop of New Amsterdam,
“The Thelematic Lectures: Lecture the First”