The document provides information about Milan Kundera's novel The Unbearable Lightness of Being, including that it takes place in 1960s Prague and follows the story of Tomas, a surgeon and womanizer. Tomas marries Tereza but continues his unfaithful ways by having a mistress, Sabina. Tomas believes that sex and love are separate. The summary explores how Tomas fears commitment as it would mean losing his power over women, and how this leads to his infidelity in relationships with both Tereza and Sabina.