Intoxication for Inspiration?!

Have you ever noticed that your writing grows more impassioned and powerful if you allow your emotions to carry you away... the words seize control of you instead of the other way round, and appear to flow of their own accord, weaving themselves into wonderful verbal tapestries that you could not have created if you had written with a clear mind? On the face of it, your thoughts might have been less coherent, less rational... but when you re-read what you've written, they make perfect sense, and you surprise yourself with your eloquence.

It is said that a calm, composed and rational mind is required for good science, but an intoxicated, untempered mind is what excels at art, music, poetry and other creative pursuits. Order and Disorder. The Left side of the Brain and the Right side of the Brain. Some of the best artists (using the term loosely) in the world have maintained that their more brilliant works were achieved when they were high on drugs or some such thing. From personal experience, I know I will never contradict them. Of course, there are other ways of getting high than drugs or alcohol... I can get "high" on well-written books or poetry, or even a good computer game. Usually I get into these heightened states of mind when I am writing rather than reading, solving rather than framing.

But even as I think these thoughts, an egregious fallacy presents itself. The best scientific breakthroughs have often manifested themselves when the mind is in one of these chaotic highs. I, for one, could never get unstuck from certain points in my research while I was thinking rationally and studiously. The momentary spark of genius that gets you past difficult barriers follows the non-laws of creativity rather than the rational paths of science.

Have I gone wrong somewhere in my assumptions or reasoning? What am I missing here?

Cheers,
Prashanth.