Or Germany could introduce a Bismarck note with
"The great questions of the day will not be settled by means of speeches and majority decisions but by iron and blood."
I guess Russia will produce a similar note, maybe with a brainy quote from Stalin or something like that.
Unfortunately the probably greatest quotes from the stone age have not survived, i guess that would be even more suited to be printed on money.
Maybe like
"Took woman in cave and splattered Og's head hehe" 