When we want to give expression to a dramatic situation in our lives, we
tend to use metaphors of heaviness. We say that something has become a
great burden to us. We either bear the burden or fail and go down with
it, we struggle with it, win or lose. And Sabina - what had come over
her? Nothing. She had left a man because she felt like leaving him. Had
he persecuted her? Had he tried to take revenge on her? No. Her drama
was a drama not of heaviness but of lightness. What fell to her lot was
not the burden, but the unbearable lightness of being.
― Milan Kundera, The Unbearable Lightness of Being
― Milan Kundera, The Unbearable Lightness of Being