The Unbearable Lightness of Being is a 1988 American film adaptation of the novel of the same name by Milan Kundera, published in 1984. Director Philip Kaufman and screenwriter Jean-Claude Carrière portray the effect on Czechoslovak artistic and intellectual life during the 1968 Prague Spring of socialist liberalization preceding the invasion by the Soviet-led Warsaw Pact that ushered in a period of communist repression. A Czech doctor (Daniel Day-Lewis) with an active sex life meets a woman who wants monogamy, and then the Soviet invasion further disrupts their lives. It portrays the moral, political, and psycho-sexual consequences for three bohemian friends: a surgeon, and two female artists with whom he has a sexual relationship.