《淮南子·说林训》
疯子伤人，没人会埋怨；幼儿骂老汉，没人会嫉恨：这是因为他们并无害人之心。
狂者伤人，莫之怨也；婴儿署老，莫之疾也，贼心。
If a madman hurts someone, no one will blame him; if a young child scolds an old man, no one will hate him: This is because they have no intention of harming others.