QUOTE : Let us take a man - a very ordinary man. A man with no idea of murder in his heart. There is in him somewhere a strain of weakness - deep down. It has so far never been called into play... But let us suppose that something occurs... He may stumble by accident on a secret - a secret involving life or death to someone. And his first impulse will be to speak out - to do his duty as an honest citizen. And then the strain of weakness tells... That is the beginning... He is not the same man he was - say, a year ago. His moral fibre is blunted. He is desperate. He is fighting a losing battle, and he is prepared to take any means that come to his hand, for exposure means ruin to him. And so - the dagger strikes... Afterwards, the dagger removed, he will be himself again, normal, kindly. But if the need again arises, then once more he will strike.