'Human nature' is one of tese vacuous expressions that is used, but never defined It is usually attributed to some (considered) bad act. People exploiting/misusing something or someone "Well, that's just human nature isn't it" Though never used to describe any act that is selfless, helpful to others etc Man dives into river to save child - onlookers commented "Bloody human nature", "What do you ecpect, it's just human nature" |  |