“Do you know that I am afraid that good people do a great deal of harm in this world? Certainly the greatest harm they do is that they make badness of such extraordinary importance.”
“I am in this earthly world, where to do harm is often laudable, to do good sometime accounted dangerous folly.”
“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.”
“A great man is doing you enough good when he isn't doing you harm.”
“If you can do no good, at least do no harm.”
“The first rule of being a ninja is, 'Do no harm.' Unless you mean to do harm. Then do lots of harm.”