One must find out for oneself, and make sure beyond doubt, 'who' one is, 'what' one is, 'why' one is... Being thus conscious of the proper course to pursue, the next thing is to understand the conditions necessary to following it out. After that, one must eliminate from oneself every element alien or hostile to success, and develop those parts of oneself which are specially needed to control the aforesaid conditions.
To knot a sentence up properly, it has to be thought out carefully, and revised. New phrases have to be put in; sudden changes of subject must be introducted; verbs must be shifted to unsuspected localities; short words must be excised with ruthless hand; archaisms must be sprinkled like sugar-plums upon the concoction; the fatal human tendency to say things straightforwardly must be detected and defeated by adroit reversals; and, if a glimmer of meaning yet remain under close scrutiny, it must be removed by replacing all the principal verbs by paraphrases in some dead language.
The greatest, like Rembrandt, paint a gallant, a hag, and a carcass with equal passion and rapture; they love the truth as it is. They do not admit that anything can be ugly or evil; its existence justifies itself. This is because they know themselves to be part of an harmonious unity; to disdain any item of it would be to blaspheme the whole. The Thelemite is able to revel in any experience soever; in each he recognizes the tokens of ultimate Truth. It is surely obvious, even intellectually, that all phenomena are interdependent, and therefore involve each other.
If you examine the highest poetry in the light of common sense, you can only say that it is rubbish; and in actual fact you cannot so examine it at all, because there is something in poetry which is not in the words themselves, which is not in the images suggested by the words 'O windy star blown sideways up the sky!' True poetry is itself a magic spell which is a key to the ineffable.