"we might say that the honor system appeals to the Swiss love for small government and limited intrusion, and allows them to feel morally upright at least once daily. These are closer to the heart of Swissness than a love of omniscient authority. When a Swiss bookshop sends you a paperback in the mail along with an invoice, they enjoy trusting you enough to wait for the payment. You, in turn, enjoy being trusted."

http://howtobeswiss.blogspot.ch/2013/05/trusting-people.html