JUAN WILLIAMS: America’s Most Influential Thinker on Race: Supreme Court Justice Clarence Thomas’s insights are reshaping law and policy for the better.

Justice Thomas, who has been on the court nearly a quarter-century, remains a polarizing figure—loved by conservatives and loathed by liberals. But his “free”-thinking legal opinions are opening new roads for the American political debate on racial justice.

His opinions are rooted in the premise that the 14th Amendment—guaranteeing equal rights for all—cannot mean different things for different people. As he wrote in Fisher v. University of Texas (2013), he is opposed to “perpetual racial tinkering” by judges to fix racial imbalance and inequality at schools and the workplace. Yet he never contends racism has gone away. The fact that a 2001 article in Time magazine about him was headlined “Uncle Tom Justice” reminds us that racism stubbornly persists.

His only current rival in the race debate is President Obama. At moments of racial controversy the nation’s first black president has used his national pulpit to give voice to black fear that racial stereotyping led to tragedy. But that is as far as he is willing to go. His attorney general, Eric Holder , has gone further by calling Americans “cowards” when it comes to discussing race. And some critics have chastised him even for that.

Justice Thomas, meanwhile, is reshaping the law and government policy on race by virtue of the power of his opinions from the bench. Thurgood Marshall, the first African-American on the Supreme Court, stood up as a voice insisting on rights for black people. Justice Thomas, the second black man on the court, takes a different tack. He stands up for individual rights as a sure blanket of legal protection for everyone, including minorities.

An idea so crazy it just might work!