In The Church’s Confession under Hitler, author Arthur Cochrane presents the not sufficiently well-known statement of exiled Albert Einstein, the great physicist, cited by Wilhelm Niemoller in Kampi und Zeugnis der bekennenden Kirche - Struggle and Testimony of the Confessing Church, p.526.
The “not so well known” quote from Einstien is all over the internet. What is not documented is when he said it and to whom. There is no reference to it or source in the Einstein archives in Israel. The custodian of the archives is on record as thinking the quote is bogus.