" They say that people standing on a height have an impulse to throw themselves down. I imagine that many suicides and murders have been committed simply because the revolver has been in the hand. It is like a precipice, with an incline of an angle of forty-five degrees, down which you cannot help sliding, and something impels you irresistibly to pull the trigger. But the knowledge that I had seen, that I knew it all, and was waiting for death at her hands without a word - might hold her back on the incline. "

― Fyodor Dostoevsky , The Gentle Spirit