Envy is a fire devouring and destroying every germ of life. Envy, by its very nature, is death and deals with death, being born of Satan, who was a murderer from the beginning. (John 8:44). It was envy that instigated him to bring about the fall of our first parents, and by the envy of the devil death came into the world.
Envy was the evil genius which inspired the first human murderer to assassinate his own brother, on the noble score that this brother of his was a better man than he. It is envy that has put weapons into the hands of man, and so blinded man as to make him commit the foulest crimes that have ever stained the face of this earth. It was envy which challenged God Himself, persecuted Him, calumniated Him, nailed Him to the wood of the Cross --
No other passion could go to such an extreme; only in envy does there remain not a trace of common humanity... In order to defend its own interests, envy would sweep everything away, would annihilate even God Himself.
And all these horrors, the natural outcome of envy, arise when I am not guided by the principles of faith, when I care not a straw for God's glory and the welfare of souls; that is, when I foster but one love, self-love; the cruel idol at whose altar I have slaughtered every other love.