The duke had a mind that ticked like a clock and, like a clock, it regularly went cuckoo.
random
related
Terry Pratchett (Wikipedia)Sir Terence David John Pratchett OBE (28 April 1948 – 12 March 2015) was an English humourist, satirist, and author of fantasy novels, especially comical works. He is best known for his Discworld series of 41 novels.