If you know the character, and if you've ever had an extended conversation with me in the past 7years - then there's a chance that you might understand just why I love this paragraph (and a bit) so much.
"A lot of this was beyond him, but to people like Ridcully this didn't matter for very long. Ridcully was simple-minded. This doesn't mean stupid. It just meant that he could only think properly about things if he cut away all the complicated bits around the edges.
He concentrated on the single main fact."