Previous PoS title

Here is an interesting previous use of the title of this blog, Power of Source.
I think Hubbard was a very good writer, I much enjoyed his SF epic Battlefield Earth (the book, not the movie) and the ten-volume satire Mission Earth (though in retrospect it was sometimes needlessly violent on the part of the Big Hero). But as a musician, I really don't know... He had the belief that if you just believed you could do something, you really could, training or no training (his words), there was no excuses, and that's what he told his mostly untrained musicians in this band.