Terry Pratchett's Last Tweet Was Heartbreakingly Final

March 12, 2015 12:40 PM EDT

English fantasy author Terry Pratchett died Thursday after an ongoing battle with early onset Alzheimer’s disease. He was 66.

The author, who published more than 70 books, wrote a closing set of tweets that referenced his Discworld series. They were heartbreakingly final:

AT LAST, SIR TERRY, WE MUST WALK TOGETHER.
— Terry Pratchett 🖤 🤍 (@terryandrob) March 12, 2015

Terry took Death’s arm and followed him through the doors and on to the black desert under the endless night.
— Terry Pratchett 🖤 🤍 (@terryandrob) March 12, 2015

The End.
— Terry Pratchett 🖤 🤍 (@terryandrob) March 12, 2015

He is survived by his wife and daughter.

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