David Hume, A Treatise on Human Nature (Edinburgh, 1739): “It is not a great disproportion between ourselves and others which produces envy, but on the contrary, a proximity. A common soldier bears no envy for his general compared to what he will feel for his sergeant or corporal; nor does an eminent writer meet with as much jealousy in common hackney scribblers, as in authors that more nearly approach him. A great disproportion cuts off the relation, and either keeps us from comparing ourselves with what is remote from us or diminishes the effects of the comparison.”