A competent and self-confident person is incapable of jealousy in anything. Jealousy is invariably a symptom of neurotic insecurity.

Love is that condition in which the happiness of another person is essential to your own... Jealousy is a disease, love is a healthy condition. The immature mind often mistakes one for the other, or assumes that the greater the love, the greater the jealousy.

Jealousy is the fear of comparison.

What we used to say was whoever had the bow tie got to lead the band. There was never any jealousy.

Jealousy... is a mental cancer.

It's amazing the clarity that comes with psychotic jealousy.

Jealousy, that dragon which slays love under the pretence of keeping it alive.

Jealousy is never satisfied with anything short of an omniscience that would detect the subtlest fold of the heart.

There is a sort of jealousy which needs very little fire; it is hardly a passion, but a blight bred in the cloudy, damp despondency of uneasy egoism.

Anger and jealousy can no more bear to lose sight of their objects than love.

Jealousy is the grave of affection.

It is not love that is blind, but jealousy.

Jealousy is the jaundice of the soul.

Religion can make it worse. Are you supposing that if people were encouraged to believe in a transcendent reality, and to be encouraged by grand rituals and music and preaching, to love their neighbors, then they would put jealousy and frustration aside?

My wife's jealousy is getting ridiculous. The other day she looked at my calendar and wanted to know who May was.