Aleister Crowley

“ In the beginning was Initiation. The flesh profiteth nothing; the mind profiteth nothing; that which is unknown to you and above these, while firmly based upon their equilibrium, giveth life.
2. In all systems of religion is to be found a system of Initiation, which may be defined as the process by which a man comes to learn that unknown Crown.
3. Though none can communicate either the knowledge or the power to achieve this, which we may call the Great Work, it is yet possible for initiates to guide others. ”

“ Every man must overcome his own obstacles, expose his own illusions. Yet others may assist him to do both, and they may enable him altogether to avoid many of the false paths, leading no whither, which tempt the weary feet of the uninitiated pilgrim. They can further insure that he is duly tried and tested, for there are many who think themselves to be Masters who have not even begun to tread the Way of Service that leads thereto.
5. Now the Great Work is one, and the Initiation is one, and the Reward is one, however diverse are the symbols wherein the Unutterable is clothed. ”

“ Especially let him guard against the finding of definite sectarian symbols in the teaching of his master, and the reasoning from the known to the unknown which assuredly will tempt him.
We labour earnestly, dear brother, that you may never be led away to perish upon this point; for thereon have many holy and just men been wrecked. ”