Our Own Folly
The murder of millions by the hands of the Nazi's during WWII is seen as one of the most evil acts of history. Considering how this was allowed to occur, a group of ministers met to discuss why the church in Germany had failed to take a stand against the evils of the Third Reich. Some of them tried to justify their actions by appealing to the "demonic forces" that had led them astray. But another minister stood up and said: "Gentlemen, we have all been very foolish". When it comes to theological error therefore, we should all beware the wiles of Satan without overlooking our own seemingly boundless capacity for folly.
(Source: R. Alan Cole: The Epistle of Paul to the Galatians. Tyndale New Testament Commentaries: IVP, 1965. p. 86).