Envy (nonfiction)

Envy (from Latin invidia) is an emotion which "occurs when a person lacks another's superior quality, achievement, or possession and either desires it or wishes that the other lacked it".

Bertrand Russell said that envy was one of the most potent causes of unhappiness. Not only is the envious person rendered unhappy by his or her envy, but that person also wishes to inflict misfortune on others.