“The guilty are allowed, by human laws, bloody as they are, to speak in their own defence before they are condemned.”

“The Three Laws of Robotics:1: A robot may not injure a human being or, through inaction, allow a human being to come to harm;2: A robot must obey the orders given it by human beings except where such orders would conflict with the First Law;3: A robot must protect its own existence as long as such protection does not conflict with the First or Second Law;The Zeroth Law: A robot may not harm humanity, or, by inaction, allow humanity to come to harm.”

“Moreover [pacifists] do not as a rule condemn violence as such, but only violence used in defence of western countries”

“It is better to risk saving a guilty person than to condemn an innocent one.”

“Surely you couldn't be a good doctor and a terrible human being---surely the laws of man, if not God, didn't allow it.”

“Muster your wits; stand in your own defence...”