The three rules of the Librarians of Time and Space are: 1) Silence; 2) Books must be returned no later than the last date shown; and 3) Do not inter… - Terry Pratchett
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The three rules of the Librarians of Time and Space are: 1) Silence; 2) Books must be returned no later than the last date shown; and 3) Do not interfere with the nature of causality.
Sir Terence David John "Terry" Pratchett, OBE (28 April 1948 – 12 March 2015) was an English humorist, satirist, and author of fantasy novels, especially comical works, most famous for his Discworld series.