Throughout his thirty-year tenure on the US Supreme Court, Justice Anthony M. Kennedy authored landmark opinions on some of the most contested issues in American society, including abortion, gay rights, and free speech. At the ideological center of a divided Court, Kennedy sided with justice, fairness, and the liberty our Constitution guarantees.

Often defying expectations, Anthony Kennedy’s pursuit of equal justice helped him define the law of the land for a generation. His pivotal vote in closely watched 5-4 decisions led Time magazine to call him “The Decider.”

The fifteenth-longest-serving Supreme Court Justice in US history, Kennedy crafted headline-making opinions that legalized gay marriage, protected political speech, abolished the death penalty for minors, and, in a nuanced ruling, upheld a woman’s right to choose—decisions that were both celebrated and criticized across political lines.

How did this devout Catholic, Reagan appointee to the Court, and conservative in both temperament and politics end up authoring some of the most consequential liberal decisions of our time?

To understand Anthony Kennedy is to realize that, for him, judging is independent of politics, preferences, and religious beliefs. It is about a fundamental conviction that neutral principles must drive the decision and an unyielding commitment to the rule of law. Sometimes called a “swing vote,” the term misunderstands Kennedy’s approach. In his own words, “The cases swing, I don’t.”

Life, Law, and Liberty serves as a reflection on the role of a judge and the life story—filled with personal heartbreak and incredible accomplishment—of a precocious boy from Sacramento, California, who became the man Chief Justice John Roberts describes as “a special combination of legal acumen, collegiality, and kindness.”

The last Justice to be confirmed to the Court unanimously (97–0) by the Senate, Anthony Kennedy serves as a role model for our fractious times, an example of civility, decency, and ethics, and a deeply principled guardian of liberty.