"Magick is the Science and Art of causing Change to occur in conformity with Will."
- Aleister Crowley

"Magick is the art of causing changes in consciousness in conformity with the Will."
- Dion Fortune

"...We will confine ourselves to an extension of a well-known definition by Aleister Crowley and state that, �Magic is the Science and Art of causing Change, on a material as well as a spiritual level, to occur in conformity with Will by altered states of consciousness."
- Frater U.: D.:, Secrets of Western Sex Magic

"A magical act may be defined as causing reality to conform to will."
- Phil Hine, 'Undoing Yourself with Chaos Magic', Rebels and Devils

"Magick is just the art of changing the focus of consciousness at will."
- Robert Anton Wilson, The Earth Will Shake

"Sorcery: the systematic cultivation of enhanced consciousness or non-ordinary awareness & its deployment in the world of deeds & objects to bring about desired results."
- Hakim Bey, T.A.Z.

"Real magick is not merely an assortment of skills and techniques. It's more like an open minded attitude, a blend of interest and dedication, which allows each honest mage to observe, to learn, to adapt, and to invent unique ways of changing idenity and reality from within."
- Jan Fries, Visual Magick

"Magic is a set of techniques and approaches which can be used to extend the limits of Achievable Reality. Our sense of Achievable Reality is the limitations which we believe bind us into a narrow range of actions and successes - what we believe to be possible for us at any one time. In this context, the purpose of magic is to simultaneously explore those boundaries and attempt to push them back - to widen the 'sphere' of possible action."
-Phil Hine, Condensed Chaos

"Magic is the Highest, most Absolute, and most Divine Knowledge of Natural Philosophy, advanced in its works and wonderful operations by a right understanding of the inward and occult virtue of things; so that true Agents being applied to proper Patients, strange and admirable effects will thereby be produced. Whence magicians are profound and diligent searchers into Nature; they, because of their skill, know how to anticipate an effect, the which to the vulgar shall seem to be a miracle."
- The Goetia of the Lemegeton of King Solomon.

Courage is the criterion of belief. To back one horse and fancy another means willing one thing and believing another. Magic (faith) is simply a means of unifying Desire and Belief. The subconscious mind is employed to create your belief and unite it to a real desire.
- Austin Osman Spare, Two Tracts on Cartomancy

 "Causing change by directing energy with one's will."
- Kerr Cuhulain, Full Contact Magick

 "Everything works by magick; science represents a small domain of magick where coincidences have a relatively high probability of occurrence. Half of the skills in magick consist of identifying probabilities worth enhancing...Magick will not free itself from occultism until we have strangled the last astrologer with the guts of the last spiritual master."
- Peter Carroll, PsyberMagick

"Magic is not necromanteia - a raising of dead material substances endowed with an imagined life - but a psychological branch of science, dealing with the sympathetic effects of stones, drugs, herbs, and living substances upon the imaginative and reflective faculties - and leading to ever new glimpses of the world of wonders around us, ranking it in due order of phenomena and illustrating the beneficence of The Great Architect of the Universe."
- Kenneth R. H. Mackenzie

"The change in situations or events in accordance with one�s will, which would, using normally accepted methods, be unchangeable."
- Anton Szandor LaVey, The Satanic Bible

"Magic is the socially unauthorized use of the will and imagination to partake in the powers of the universe."
- S. Jason Black & Christopher S. Hyatt, Pacts With The Devil

"The true practice of magic depends on the legitimacy of the individual human will. The magician wills something to occur which under ordinary circumstances would not occur, and thereby demonstrates the reality of his or her own individuality. Magicians make the world dance according to their tunes, religionists seek to find the tune of the world and have it teach them how to dance."
- Crystal Dawn and Stephen Flowers, Carnal Alchemy

"Unless a man be born a magician, and God have destined him even from his birth to the work, so that spirits do willingly come of their own accord - which doth happen to few - a man must use only of those things herein set down, or written in our other books of occult philosophy, as means to fix the mind upon the work to be done; for it is in the power of the mind itself that spirits do come and go, and magical works are done, and all things in nature are but as uses to induce the will to rest upon the point desired."
- Cornelius Agrippa

"Magick is the art of belief."
- ludrikos muttleyos, on chaoskaos