Robert Cooper Grier,
Philadelphia and Reading Railroad Company v…
“ Nothing but the most stringent enforcement of discipline, and the most exact and perfect obedience to every rule and order emanating from a superior, can insure safety to life and property. The intrusting such a powerful and dangerous engine as a locomotive, to one who will not submit to control, and render implicit obedience to orders, is itself an act of negligence, the causa causans of the mischief; while the proximate cause, or the ipsa negligentia which produces it, may truly be said, in most cases, to be the disobedience of orders by the servant so intrusted. ”
