'He ran over Myrtle like you'd run over a dog and never even stopped his car.' There was nothing I could say, except the one unutterable fact that it wasn't true.

He broke off defiantly. ‘What if I did tell him? That fellow had it coming to him. He threw dust into your eyes just like he did in Daisy’s, but he was a tough one. He ran over Myrtle like you’d run over a dog and never even stopped his car.’
There was nothing I could say, except the one unutterable fact that it wasn’t true.

– F. Scott Fitzgerald

The Great Gatsby, Chapter 9. Tom Buchanan confesses to Nick Carraway that he was the one who had spoken to Wilson about Myrtle’s death on the day Wilson murdered Gatsby. Tom put the blame on Gatsby, unaware it was Daisy, not Gatsby, who ran over Myrtle. Nick doesn’t tell Tom it was Daisy at the wheel, and lies to protect her.

The Great Gatsby Quotes