Highlights: 

"the inspector general's team went through the F.B.I.'s work with a microscope and found no evidence that bias or improper motivation affected the investigation" 

"But even in hindsight I think we chose the course most consistent with institutional values."

"The report also resoundingly demonstrates that there was no prosecutable case against Mrs. Clinton"

"We knew that reasonable people might choose to do things differently and that a future independent reviewer might not see things the way we did."

"I never imagined the F.B.I. would face a choice in late October 2016 either to tell Congress we had restarted the email investigation in a significant way or to conceal that fact."

Comey's carefully crafted response to the report can be read below via the New York Times:

James Comey: This Report Says I Was Wrong. But That's Good for the F.B.I.