So it is a matter of concern that trust has become an increasingly rare commodity. In the US, before there has been a precipitous drop in faith in the government. Almost four out of five Americans trusted Washington to do the right thing when Eisenhower and John F Kennedy were in the White House. Under Donald Trump, that has fallen to one in five. In Britain, Theresa May is trying to finesse a Brexit deal at a time when parliament is even less trusted than the banks.