Grief at another's prosperity is in one way the very same as envy, when, to Wit, a man grieves over another's prosperity, in so far as it gives the latter a good name, but in another way it is a daughter of envy, in so far as the envious man sees his neighbor prosper notwithstanding his efforts to prevent it.
 Thomas Aquinas, Summa Theologica (1274). copy citation

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Author Thomas Aquinas
Source Summa Theologica
Topic grief envy
Date 1274
Language English
Reference
Note Translated by Fathers of the English Dominican Province
Weblink http://www.gutenberg.org/cache/epub/18755/pg18755-images.html

Context

“The middle consists in the fact that when a man aims at defaming another, he is either able to do so, and then we have joy at another's misfortune, or he is unable, and then we have grief at another's prosperity. The term is hatred itself, because just as good which delights causes love, so does sorrow cause hatred, as stated above (Q. 34, A. 6) . Grief at another's prosperity is in one way the very same as envy, when, to Wit, a man grieves over another's prosperity, in so far as it gives the latter a good name, but in another way it is a daughter of envy, in so far as the envious man sees his neighbor prosper notwithstanding his efforts to prevent it. On the other hand, joy at another's misfortune is not directly the same as envy, but is a result thereof, because grief over our neighbor's good which is envy, gives rise to joy in his evil. _______________________” source