Definitions are relative to the norm and vantage point of the pen's dictator. As all of sin is restriction of will, both neurosis and psychosis are a matter of degree of restriction. Simply because I babble on about the sky while you are talking about the fence doesn't make me neurotic, and even though I'm indirectly and willfully reasserting myself. If however, I myself or you yourself experience internal pangs of fear or resentment as a result, then in terms of spirit, that would be neurotic; and even though in terms of social mores it would be normal. If I see angels, am I psychotic? According to the APA I am; therefore all saints and prophets are fruit bats. Adherence to a disparity of reality and perceived reality assumes that there is a difference between perception and reality; but balanced perception is synonymous with reality, and in those instances where perception transcends the laws of the physical universe, perception is reality itself. So, in order to make definition of the terms sensible, classifications of neurosis and psychosis are constructs via mores and conventional paradigms; ergo, they are potential virtues. On the other hand if a person is a murderer/rapist/cannibal etc. you can safely say that person is both psychotic and sinful. Hence, the true definitions of the terms should be degrees to which behaviour violates both spirit and social norms. If it only violates social norms, then it is neither neurotic nor psychotic, for how can conditioning of itself ever be sane? Conversely, if behaviour only violates spirit, then it is sin, and for all practical purposes it is either neurotic or psychotic depending upon the degree of violation. Spirit truly is the mooring post of humanity - not science.
On another note, Fra. Al, when reading Crowley one is called to judgment of his sanity, and perhaps moreso than any other author in history. As with poignant quotations such as yours, the true clarity and sensibility of the man shines through.
P.S. Fr. Al - are you an Asian Buddhist? No need to answer, I'm just interested in knowing a born and raised Buddhist perspective on Copticism.