Emma Goldman
Jealousy

No one at all capable of an intense conscious inner life need ever hope to escape mental anguish and suffering. Sorrow and often despair over the so-called eternal fitness of things are the most persistent companions of our life. But they do not come upon us from the outside, through the evil deeds of particularly evil people. They are conditioned in our very being; indeed, they are interwoven through a thousand tender and coarse threads with our existence.