The theme of voice is central to Speak by Laurie Halse Anderson. The novel explores the journey of Melinda Sordino, a high school freshman, as she struggles to find her voice after a traumatic event. Throughout the story, Melinda's silence is both a symptom of her trauma and a reflection of the societal forces that suppress her. Her journey to reclaim her voice is a metaphor for healing and empowerment.

Melinda's silence is initially caused by the trauma of being raped by Andy Evans and the subsequent social ostracization she faces. Her peers shun her for calling the police at a summer party, unaware of her true reasons. This social rejection is compounded by the lack of support from her teachers and parents, leaving her feeling isolated and voiceless. Melinda's internal struggle is symbolized by her inability to speak, as seen when she screams into her hands during a pep rally, unheard by those around her.

Despite her initial silence, Melinda gradually begins to find her voice through various experiences. Her friendship with Ivy in art class helps her reconnect with her creative spirit, allowing her to express herself nonverbally. Melinda's decision to protest giving speeches in class and her act of writing "Guys to Stay Away From . . . Andy Evans" in a bathroom stall are significant steps in her journey. These actions demonstrate her growing confidence and willingness to stand up for herself.

The contrast between Melinda and her classmate David Petrakis highlights her struggle. David is secure in his identity and comfortable expressing himself, serving as a model for Melinda. His friendship offers her a glimpse of what it means to have a voice and be heard. Anderson uses Melinda's internal monologue to give readers insight into her thoughts and emotions, emphasizing that even those who appear silent have a voice worth hearing.

Anderson's choice to write dialogue in Melinda's voice allows readers to hear her perspective, even when the world around her does not. This technique underscores the novel's message that everyone deserves to be heard, challenging the culture of silence that often surrounds issues like sexual assault. By the end of the novel, Melinda's journey to reclaim her voice culminates in her ability to speak out against her attacker, symbolizing her healing and empowerment.