Released in 2018,On the Basis of Sexis a powerful legal drama that chronicles the early career of Ruth Bader Ginsburg, focusing on her groundbreaking fight for gender equality and her role in the landmark Moritz v. Commissioner case. This biographical film gained critical acclaim not only for its story but also for its compelling performances. The cast ofOn the Basis of Sexincludes a combination of seasoned actors and rising stars, all of whom contribute to the emotional and historical depth of the narrative.
Felicity Jones as Ruth Bader Ginsburg
Felicity Jones leads the cast with a commanding performance as Ruth Bader Ginsburg. The British actress, previously known for her roles in films likeThe Theory of EverythingandRogue One, portrays Ginsburg with a perfect balance of determination, intelligence, and vulnerability. Jones spent time studying the real-life Supreme Court Justice’s mannerisms and speech patterns to accurately bring her character to life. Her role in the film anchors the narrative and offers a heartfelt tribute to one of the most influential legal minds in American history.
Armie Hammer as Martin Ginsburg
Playing opposite Jones is Armie Hammer as Martin Ginsburg, Ruth’s devoted husband and a successful tax attorney. Hammer captures Martin’s charm, wit, and progressive attitude toward gender equality. The chemistry between Hammer and Jones is one of the film’s emotional pillars, showcasing a partnership based on mutual respect and intellectual admiration. Martin’s unwavering support for Ruth’s ambitions is depicted in multiple scenes, underlining the significance of a strong partnership in challenging societal norms.
Justin Theroux as Mel Wulf
Justin Theroux portrays Mel Wulf, the legal director of the ACLU who eventually supports Ruth’s efforts in the Moritz case. Initially skeptical, Wulf’s transformation into an advocate of Ginsburg’s cause adds dramatic tension and reflects the challenges Ruth faced even among supposed allies. Theroux brings a sharp, sardonic edge to his character, highlighting the political and legal cynicism of the time.
Sam Waterston as Erwin Griswold
Veteran actor Sam Waterston plays Erwin Griswold, the Dean of Harvard Law School and one of Ruth’s early antagonists. Griswold’s condescending views about women in law serve as a direct contrast to Ruth’s intellect and determination. Waterston’s authoritative presence adds historical realism and reminds viewers of the institutional barriers women faced in legal academia.
Cailee Spaeny as Jane Ginsburg
Cailee Spaeny plays Jane Ginsburg, Ruth and Martin’s teenage daughter, who symbolizes the next generation of women empowered by her mother’s advocacy. Spaeny’s performance offers a youthful, rebellious energy and reflects how Ruth’s influence extended beyond the courtroom and into her own household. Jane’s boldness and outspoken nature provide a mirror to Ruth’s inner resolve.
Kathy Bates as Dorothy Kenyon
Kathy Bates appears in a memorable supporting role as Dorothy Kenyon, a real-life feminist attorney and civil rights activist who helped pave the way for Ginsburg’s generation. Although her screen time is brief, Bates delivers a commanding performance that emphasizes the continuum of the women’s rights movement. Her character’s mentorship adds depth to Ruth’s own motivations.
Stephen Root as Professor Brown
Stephen Root portrays Professor Brown, another figure representing the entrenched academic establishment. His skepticism and dismissive attitude toward Ruth’s ambitions reflect the deeply rooted prejudices in legal education during the 1950s and 1960s. Root’s portrayal is subtle yet effectively antagonistic, serving as one of several reminders of the cultural challenges Ruth had to overcome.
Supporting Cast
The supporting cast ofOn the Basis of Sexincludes a number of talented actors who help bring the story’s legal and historical backdrop to life. Each character plays a crucial role in framing the professional and personal obstacles Ginsburg faced:
- Jack Reynoras Jim Bozarth A Department of Justice lawyer opposing Ruth’s case.
- Gary Werntzas Judge Doyle A key figure during courtroom scenes.
- Ben Carlsonas Chief Justice Rehnquist Adds political context to the case’s reception.
- Ronan Rafteryas Tom Millet A colleague at the ACLU who interacts with Ruth and Mel.
Character Dynamics and Thematic Depth
The film relies heavily on character dynamics to underscore its core themes gender discrimination, family support, and perseverance in the face of adversity. Felicity Jones and Armie Hammer convincingly portray the intellectual and emotional bond between Ruth and Martin, a relationship often described as one of the most balanced and progressive marriages of its time. Justin Theroux’s performance adds a layer of friction and gradual acceptance, representing how even liberal circles needed convincing.
Meanwhile, Sam Waterston and Stephen Root embody the resistance Ginsburg encountered from the male-dominated legal world. Their roles emphasize how institutional sexism was not always overtly aggressive but often manifested in patronizing attitudes and professional gatekeeping.
Historical Accuracy and Performance
The casting ofOn the Basis of Sexwas largely praised for its accuracy and reverence to historical detail. Felicity Jones not only bore a physical resemblance to Ruth Bader Ginsburg in her younger years but also captured her cadence and composure. Armie Hammer’s portrayal of Martin Ginsburg offered a rare cinematic representation of a supportive male spouse who encouraged his wife’s ambitions at every turn.
Kathy Bates’ cameo as Dorothy Kenyon added gravitas and historical continuity, reminding viewers that Ruth’s accomplishments were built on the efforts of previous generations. The ensemble cast works together seamlessly to create a believable world where personal sacrifice meets professional determination.
The cast ofOn the Basis of Sexwas carefully selected to reflect the strength, complexity, and realism of the true events it sought to portray. With Felicity Jones at the center, supported by Armie Hammer, Justin Theroux, Sam Waterston, and a host of other strong performances, the film succeeds in bringing Ruth Bader Ginsburg’s early legal battles to life. The characters are more than historical placeholders they’re fully realized individuals who embody the broader themes of equality, justice, and resilience. Through powerful acting and thoughtful storytelling, the cast helped turn this biographical film into an inspiring cinematic tribute to one of America’s most iconic legal figures.