“The first rule of being a ninja is, 'Do no harm.' Unless you mean to do harm. Then do lots of harm.”
“Rule #1: Hurt, but do not harm.”
“First do no harm!”
“Primum non nocerum. (First do no harm)”
“Half the harm that is done in this world is due to people who want to feel important. They don't mean to do harm; but the harm does not interest them. Or they do not see it, or they justify it because they are absorbed in the endless struggle to think well of themselves.”
“there is no harm in being afraid. The only harm is in doing what Fear tells you. Fear is not your master! Laugh in his face and he will run away.”