Crime and Punishment by Part 2 Chapter 4 Page 28

one must take into consideration the facts which prove him innocent, especially as they are facts that cannot be denied. And do you suppose, from the character of our legal system, that they will accept, or that they are in a position to accept, this fact — resting simply on a psychological impossibility — as irrefutable and conclusively breaking down the circumstantial evidence for the prosecution? No, they won’t accept it, they certainly won’t, because they found the jewel-case and the man tried to hang himself, ‘which he could not have done if he hadn’t felt guilty.’ That’s the point, that’s what excites me, you must understand!”

“Oh, I see you are excited! Wait a bit. I forgot to ask you; what proof is there that the box came from the old woman?”