Control of Attention Is the First Skill of a Magician
Attention is selectivity applied to perception. It is an inward decision, usually made unconsciously, about what is worth perceiving and what isn’t. Attention both finds meaning and creates meaning. When we adopt the principle of “separate the subtle from the gross,” we are deciding on purpose where we want our attention to go, temporarily withholding it from what is obvious and bestowing it instead on what is inconspicuous and elusive.
In the world of spirit, attention is the equivalent of physical movement. It carries us toward the knowledge and acquaintances we seek and away from influences that we have determined to be harmful or useless. If you can’t control your attention, you can’t move properly, can’t get where you want to go when you want to go there. To the extent that you allow your attention to be jerked around by whatever happens to be manifesting most insistently, you look to other spiritual beings like a spastic. Control of attention is thus the first skill an aspiring magician must master, and perhaps the most important.
— On Becoming an Alchemist, pp. 52-53