A young woman in love with a man torn between his love for her and his
incorrigible womanizing; one of his mistresses and her humbly faithful
lover -- these are the two couples whose story is told in this
masterful novel. In a world in which lives are shaped by irrevocable
choices and by fortuitous events, a world in which everything occurs
but once, existence seems to lose its substance, its weight. Hence, we
feel "the unbearable lightness of being" not only as the consequence of
our pristine actions but also in the public sphere, and the two
inevitably intertwine.