The womens movement in the 1960s and 1970s in the United States has become known as the second wave of feminism. Many women raised their voices to alter societys understanding of women and to end gender discrimination in various domains of society. Literature was one form, where women articulated their beliefs and desires to protest assumed gender roles. The aim of this thesis is to analyze three feminist writings of the period, The Feminine Mystique by Betty Friedan, Of Woman Born: Motherhood as Experience and as Institution, and Fear of Flying by Erica Jong. These texts are interpreted as voices of female protest against the construction of the feminine ideal and as a self-confident declaration of female sexuality and embodiment. The analysis investigates how Betty Friedan and Adrienne Rich use their voices through their writings to raise consciousness and to question the status quo, as well as how Erica Jong - through a first person narrator - protests gender and sexual assumptions in American society. This analysis is based on a theoretical framework, which explains the context of Second Wave Feminism and significant theoretical approaches and concepts of feminist criticism crucial for the thesis. The analysis revealed that the writers challenged general social assumptions of femininity. The focus of each text, however, differs slightly. Betty Friedans focus is on the feminine mystique and “the problem that has no name,” Adrienne Rich deconstructs motherhood as a patriarchal institution, and Erica Jongs focus lies on demonstrating female empowerment through sexuality. Nevertheless, the thesis illustrates that the three authors use the power of their female voices to construct an authentic picture of womanhood, motherhood and sexuality, which had significant impact on altering societys beliefs on women.