Go‑to expert on gender identity, Schuyler Bailar, offers an essential, urgent guide that changes the conversation about gender identity and how we talk about it. Anti-transgender legislation is being introduced in state governments around the United States in record-breaking numbers. Trans people are under attack in sports, healthcare, school curriculum, bathrooms, bars, and nearly every walk of life. He/She/They clearly and compassionately addresses fundamental topics, from why being transgender is not a choice and why pronouns are important, to more complex issues including how gender-affirming healthcare can be lifesaving and why allowing trans youth to play sports is good for all kids. With a relatable narrative rooted in facts, science, and history, Schuyler helps restore common sense and humanity to a discussion that continues to be divisively coopted and deceptively politicized. Schuyler Bailar didn’t set out to be an activist, but his very public transition to the Harvard men’s swim team put him in the spotlight. His choice to be open about his transition and share his experience has touched people around the world. His plain-spoken education has evolved into tireless advocacy for inclusion and collective liberation. In He/She/They, Schuyler uses storytelling and the art of conversation to give us the essential language and context of gender, meeting everyone where they are and paving the way for understanding, acceptance, and, most importantly: connection. He/She/They is more than a book on allyship; it also speaks to trans folks directly, answering the question, “does it get better?” with a resounding yes, celebrating radical trans joy. Myth-busting, affirming, compassionate, and fierce, He/She/They is a crucial, urgent—and lifesaving—book that forever changes the conversation about gender.