How many countries will Germany need to bail out before it has erased the guilt of the Holocaust? That is the provocative question posed by Thilo Sarrazin, a publicity-hungry maverick whose 2010 book attacking immigration shattered Germany’s political consensus and sold more than 1 million copies. Last week he returned to the scene of the crime with a new book called Why Europe Doesn't Need the Euro. In a much-quoted passage, he says supporters of eurobonds are driven “by that very German reflex according to which atonement for the holocaust and the world wars will never be complete until we have delivered our entire public interest, and even our money, into European hands.” This title has raced to the top of best-seller lists and sent jittery markets into panic. Sarrazin is a narcissist who is more interested in self-promotion than serious analysis. But his views on Europe – as well as the political class’s reaction to them – tell us a lot about how the euro’s political travails have come about, as well as how they are likely to unfold.