Envy is pain at someone else’s happiness; jealousy is the pain we feel when we fear that someone else may interfere with the monopoly we have over the person who makes us happy. The envious wishes to deprive the other of something, while the jealous person feels dispossessed of someone he feels belongs to him.

We humans are naturally compelled to compare ourselves with one another. We are continually measuring people’s status, the levels of respect and attention they receive, and noticing any differences between what we have and what they have. For some of us, this need to compare serves as a spur to excel through our work. For others, it can turn into deep envy—feelings of inferiority and frustration that lead to covert attacks and sabotage. Nobody admits to acting out of envy. You must recognize the early warning signs—praise and bids for friendship that seem effusive and out of proportion; subtle digs at you under the guise of good-natured humor; apparent uneasiness with your success. It is most likely to crop up among friends or your peers in the same profession. Learn to deflect envy by drawing attention away from yourself. Develop your sense of self-worth from internal standards and not incessant comparisons.

Envy is an indicator that alerts you if you’re being honest with yourself. If you can look at someone who has things you don’t and say, “You know what. I really don’t want that,” you know you’re in a good place. If you say you don’t want something but don’t mean it, envy will eat away at you. What it’s telling you is that you really do want it but are afraid to work for it.

Envy is an illusion.

The part of the person that we envy doesn’t exist without the rest of that person.

If we aren’t willing to trade places with them completely - their life, their body, their thoughts - then there is nothing to be envious about.

Pay attention to what you envy. Jealousy is an ugly emotion, but it tells the truth. You mostly envy those who have what you desire.

Envy is negative empathy.

Envy consists in seeing things never in themselves, but only in their relations. If you desire glory, you may envy Napoleon, but Napoleon envied Caesar, Caesar envied Alexander, and Alexander, I daresay, envied Hercules, who never existed.

Envy is a horrible thing. It is unlike all other kinds of suffering in that there is no disguising it, no elevating it into tragedy. It is more than merely painful, it is disgusting.

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.

Envy is a sign that you ought to be doing more with your life.

Our envy of others devours us most of all.

[E]nvy does not provide any valid information about the surrounding environment. On the contrary, it presents the superior person as an enemy and a scandal, and not as a friend and a model; it narrows and darkens the vital horizon, instead of opening it up and shedding light on it; it identifies the envious’s path of happiness with other people’s, and this produces self-ignorance and depersonalization…

Now envy and antipathy, passions irreconcilable in reason, nevertheless in fact may spring conjoined like Chang and Eng in one birth. Is Envy then such a monster? Well, though many an arraigned mortal has in hopes of mitigated penalty pleaded guilty to horrible actions, did anybody ever seriously confess to envy? Something there is in it universally felt to be more shameful than even felonious crime. And not only does everybody disown it, but the better sort are inclined to incredulity when it is in earnest imputed to an intelligent man. But since it's lodgement is in the heart and not the brain, no degree of intellect supplies a guarantee against it.

Jealousy is an ugly emotion, but it tells the truth. You mostly envy those who have what you desire.