I found the quote I was trying to remember earlier:

Terry looked at me. He said: “Do not underestimate this anger. This anger was the engine that powered Good Omens.” I thought of the driven way that Terry wrote, and of the way that he drove the rest of us with him, and I knew that he was right. [...] And that anger, it seems to me, is about Terry’s underlying sense of what is fair and what is not. It is that sense of fairness that underlies Terry’s work and his writing, and it’s what drove him from school to journalism to the press office of the SouthWestern Electricity Board to the position of being one of the best-loved and bestselling writers in the world. [...] Terry’s authorial voice is always Terry’s: genial, informed, sensible, drily amused. I suppose that, if you look quickly and are not paying attention, you might, perhaps, mistake it for jolly. But beneath any jollity there is a foundation of fury. Terry Pratchett is not one to go gentle into any night, good or otherwise. He will rage, as he leaves, against so many things: stupidity, injustice, human foolishness and shortsightedness, not just the dying of the light. And, hand in hand with the anger, like an angel and a demon walking into the sunset, there is love: for human beings, in all our fallibility; for treasured objects; for stories; and ultimately and in all things, love for human dignity. --Neil Gaiman, Sep. 24, 2014. theguardian.com.

These paragraphs have stuck with me for almost a decade. I read this article the day it came out, and it struck a chord that's still ringing, to be honest. Back then, I'd only read maybe 5 books of Discworld; this article was the first I'd heard of Good Omens.

I think of this --'do not underestimate this anger'-- literally every time I think of Terry Pratchett. I certainly thought of it when I finally did get around to Good Omens a few years later --as an audiobook, borrowed from my library. I listened for the sound of the engine.

Posting this here to remind myself to keep listening.