Let me try to explain by way of example:
SAMPSON
The Universe is in equilibrium; therefore He that is without it, though his force be but a feather, can overturn the Universe.
Be not caught within that web, O child of Freedom! Be not entangled in the universal lie, O child of Truth!
Now, what is the meaning of the above? It can be difficult to discern - it could be random babble from a known drug-abuser and lunatic. However, when studying this from the point of view of a martial artist, I see several things.
First, the title, which is 'Sampson'. Who was Sampson (aka Samson)? Known for strength, overcome by treachery, etc. The guy who knocked down the pillars.
From my reading of Crowley, I know that he equated the fabled feats of strength displayed by Samson to direct application of Archimedes' principles, that is, leverage. So we are talking about balance here.
Now, applying that to my understanding of martial arts principles, I know that balance is an extremely important component of engagement with an adversary. However, I have always looked at it from the standpoint of keeping my own balance whilst stealing the balance of my opponent. "A person's unbalance is the same as a weight," as the 8 Laws of the Fist would have it.
However, on reading the quote above from Crowley, my eyes were opened. He seems to be saying that a person without equilibrium (balance) can overturn the universe. Now, that directly correlates to Crowley's aforementioned comparison of Samson to Archimedes ("Give me a long enough lever and a place to stand and I can move the world.")
But more than that. In a martial arts sense, it becomes clear that ANY person's unbalance is the same as a weight. Not just my opponent's but mine.
But it is a positive statement, not a negative statement. In other words, it is not an exhortation not to lose one's balance, but rather, an observation that losing one's balance gives one leverage to "overturn the Universe."
Think of how many ways in which this basic observation is true, not just in the arena of martial arts. Think of world events, history, even recent events (which I will not mention, but I think you can guess). Notice how 'unbalance' even when mental and not physical can have an outsized impact on the world.
So. I wonder about how I might unbalance MYSELF and use it to my advantage. I then see that judoka do this. There are many types of throws which begin with receiving more than taking, appearing to give, when actually in full control. One falls to throw, one stoops to conquer, so to speak.
As a result of this, now I am thinking more about how I can engage the use of 'controlled unbalance' on my own part to defeat an adversary - moving the world by giving way, and not necessarily as the judoka do. Perhaps there is more there. I don't know. I am studying it.
Did the author intend any of this? Not in the martial arts sense, of course. Crowley was no martial artist. However, he was an adept at controlling public interest, dictating fashion, remaining in the public eye, being followed, talked about, and even (in some quarters) revered. Can we not say he was applying this principle himself? Does one not see how this concept of using leverage from an unbalanced position can be applied to all manner of things, mental and physical?
So this is how I read things. One asks if this was the author's intent, or if I am applying my own interpretation on it. Certainly I am applying my own interpretation on it, and certainly Crowley did not intend to write an exposition of martial arts training. However, a valid observation is a valid observation, both on his part and on mine. He said something which I believe is rather startling when I think about how it applies to everything in general, and then how it applies to my life as a martial artist in particular.
Summary - it doesn't matter where you find truth; whether the person who put it there meant for you to see it or not, whether it was intended consciously or unconsciously. All quite beside the point. I take what I find, think about it, see if I can apply it according to the notion I have developed around it. If I can, then it is truth, and how I came by it is not important at all.