a book by Nate Silver, the political data whiz who believes Mr. Comey’s explosively ambiguous letter in October 2016 about the Hillary Clinton email investigation probably handed Mr. Trump the election; a page from a quote-of-the-day calendar, saved for its resonance: “Never attribute to malice that which is adequately explained by stupidity.”

https://www.nytimes.com/2019/10/12/us/politics/james-comey-trump.html