Magnanimous people have no vanity, they have no jealousy, and they feed on the true and the solid wherever they find it. And, what is more, they find it everywhere. – Van Wyck Brooks

The surest route to breeding jealousy is to compare. Since jealousy comes from feeling less than another, comparisons only fan the fires. – Dorothy Corkville Briggs

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

Envy is a littleness of soul, which cannot see beyond a certain point, and if it does not occupy the whole space feels itself excluded. – William Hazlitt, Characteristics, 1823