Aristotle in his Rhetoric argued (Rhetoric 2.8) that before a person can feel pity for another human, the person must first have experienced suffering of a similar type, and the person must also be somewhat distanced or removed from the sufferer.[7] He defines pity as follows: "Let pity, then, be a kind of pain in the case of an apparent destructive or painful harm of one not deserving to encounter it, which one might expect oneself, or one of one's own, to suffer, and this when it seems near".[7] Aristotle also pointed out that "people pity their acquaintances, provided that they are not exceedingly close in kinship; for concerning these they are disposed as they are concerning themselves", arguing further that in order to feel pity, a person must believe that the person who is suffering does not deserve their fate.[7] Developing a traditional Greek view in his work on poetry, Aristotle also defines tragedy as a kind of imitative poetry that provokes pity and fear.[8] David Hume in his Treatise of Human Nature (Sect.