is to suffer

Nathan Altman, Anna Akhmatova (1914)

SONJA: Natasha, to love is to suffer. To avoid suffering, one must not love. But, then one suffers from not loving. Therefore, to love is to suffer, not to love is to suffer, to suffer is to suffer. To be happy is to love, to be happy, then, is to suffer, but suffering makes one unhappy, therefore, to be unhappy one must love, or love to suffer, or suffer from too much happiness, I hope you're getting this down.

Woody Allen, Love and Death, (1975).