Here's the letter.

You know, Varvara Petrovna, his letters are endless and incessant, and, you know, for the last two or three months there has been letter upon letter, till, I must own, at last I sometimes didn't read them through.
Forgive me, Stepan Trofimovitch, for my foolish confession, but you must admit, please, that, though you addressed them to me, you wrote them more for posterity, so that you really can't mind....

Come, come, don't be offended; we're friends, anyway.

But this letter, Varvara Petrovna, this letter, I did read through.

These 'sins'-- these 'sins of another'-- are probably some little sins of our own, and I don't mind betting very innocent ones, though they have suddenly made us take a fancy to work up a terrible story, with a glamour of the heroic about it; and it's just for the sake of that glamour we've got it up.