An envious man waxeth lean with the fatness of his neighbors. Envy is the daughter of pride, the author of murder and revenge, the beginner of secret sedition and the perpetual tormentor of virtue. Envy is the filthy slime of the soul; a venom, a poison, or quicksilver which consumeth the flesh and drieth up the marrow of the bones.
Wit and Wisdom of Socrates, Plato, Aristotle (ed. 1967)