You actually talked with him! Oh that's wonderful! I got to see him, only once, in DC about a year before his diagnosis was announced. He was hysterically funny, of course. I didn't meet him in person - too tonguetied to know what to say. But I'm so glad I saw him, then, when he was still well, and we didn't yet know what awaited him.
Discworld kept me going through some brutal, brutal times in my working life. Even though it was an imagined world, I could tell myself that there were people living and writing in this world who still had an innate sense of decency, and were not being demolished for that sin. Knowing that held me together through the worst.
Nowadays I reread Pratchett, and Theodore Sturgeon, and Seanan McGuire, mostly. (If you're not familiar with her work, I do recommend it, although it's darker and can be violent in places. She's an amazing worldbuilder.)

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"I believe you find life such a problem because you think there are the good people and the bad people," said the man. "You're wrong, of course. There are, always and only, the bad people, but some of them are on opposite sides."
-- Terry Pratchett, Guards! Guards!