As iron is eaten away by rust, so the envious are consumed by their own passion.

Our envy of others devours us most of all.

Proverbs in many languages agree that the greatest damage done by the envious man is to himself. Envy is described as an utterly destructive, uncreative and even diseased state of mind for which there is no remedy.

How great is the envy which follows a man from his neighbours, like the sting of a wicked spirit... he who receives it, and takes it as it were into his breast, has nothing else but to eat his own heart, and tear it, and consume both soul and body, finding inconsolable vexation in the good fortune of others.

Guilt upon the conscience, like rust upon iron, both defiles and consumes it, by degrees gnawing and creeping into it, as that does; till at length it has eat out the very heart and substance of the metal.

Thus he who slandered will see himself in the guise of a cannibal eating his dead brother's flesh, and he who envied as one who cast stones against a wall, which stones, rebounding, put out the eyes of his own children.

There are always men who take their own measure against greatness, and hate it not for what it is, but for what they are. They can envy even the dead. So much Alexander saw. He did not understand, since it was not in him, the power such men have to rouse in others the sleeping envy they once had a decent shame of; to turn respect for excellence into hate. Nor did Kallisthenes understand it in himself. Vanity begets it, vanity covers it up.

In a crunch a man's reputation never counts for as much as it ought to. Most people are good-hearted and willing to give a man the benefit of the doubt, but the poisonous few are eager to see others brought down, ruined. … Envy, Bob. Envy eats them alive. If you had money, they'd envy you that. But since you don't, they envy you for having such a good, bright, loving daughter. They envy you for just being a happy man. They envy you for not envying them. One of the greatest sorrows of human existence is that some people aren't happy merely to be alive but find their happiness only in the misery of others.

People's envy shows how unhappy they feel; their constant attention to the doings of others how bored they are.

"The revolutionaries thought they would be destroying vanity when they destroyed the privileges of the noble. But vanity is like a virulent cancer that spreads in a more serious form throughout the body just when one thinks it has been removed. Who is there left to imitate after the "tyrant"? Henceforth men shall copy each other; idolatry of one person is replaced by hatred of a hundred thousand rivals. In Balzac's opinion, too, there is no other god but envy for the modern crowd whose greed is no longer stemmed and held within acceptable limits by the monarch. Men will become gods for each other."

To feel envy is human, to savour schadenfreude is devilish.

Envy, bitter envy, was permeating his soul drop by drop, like a poison that tainted all his pleasures and made his life hateful.

Iron has powers to draw a man to ruin.

Envy has been, is, and shall be, the destruction of many. What is there, that Envy hath not defamed, or Malice left undefiled? Truly, no good thing.