In Italy for thirty years under the Borgias they had warfare, terror, murder and bloodshed but they produced Michelangelo, Leonardo da Vinci and the Renaissance. In Switzerland, they had brotherly love; they had five hundred years of democracy and peace and what did that produce? The cuckoo clock. - Orson Welles
The duke had a mind that ticked like a clock and, like a clock, it regularly went cuckoo. - Terry Pratchett
You're alright, I guess; for, you're just being you, like any other cuckoo. - Fakeer Ishavardas