I don't think jealousy has much of a connection with real, objective conditions. Like if you're fortunate you're not jealous, but if life hasn't blessed you, you are jealous. Jealousy doesn't work that way. It's more like a tumor secretly growing inside us that gets bigger and bigger, beyond all reason. Even if you find out it's there, there's nothing you can do to stop it.

Autor: Haruki Murakami