Envy is hatred, in so far as it induces a man to be pained by another's good fortune, and to rejoice in another's evil fortune.
 Baruch Spinoza, Ethics (1677). copy citation

add
Author Baruch Spinoza
Source Ethics
Topic pain evil
Date 1677
Language English
Reference
Note Translated by R. H. M. Elwes
Weblink http://www.gutenberg.org/files/3800/3800-h/3800-h.htm

Context

“so that partiality may also be defined as love, in so far as it induces a man to think too highly of a beloved object. Contrariwise, disparagement may be defined as hatred, in so far as it induces a man to think too meanly of a hated object. Cf. III. xxvi. note. XXIII. Envy is hatred, in so far as it induces a man to be pained by another's good fortune, and to rejoice in another's evil fortune. Explanation—Envy is generally opposed to sympathy, which, by doing some violence to the meaning of the word, may therefore be thus defined: XXIV. Sympathy (misericordia) is love, in so far as it induces a man to feel pleasure at another's good fortune, and pain at another's evil fortune.” source