Spiritual health is no more stable than bodily; and though we may seem unaffected by the passions we are just as liable to be carried away by them as to fall ill when in good health.
Francois de La RochefoucauldJealousy is in some measure just and reasonable, since it merely aims at keeping something that belongs to us or we think belongsto us, whereas envy is a frenzy that cannot bear anything that belongs to others.
Francois de La Rochefoucauld