According to the Supreme Court website:
Anthony M. Kennedy, Associate Justice, was born in Sacramento, California, July 23, 1936. He married Mary Davis and has three children. He received his B.A. from Stanford University and the London School of Economics, and his LL.B. from Harvard Law School. He was in private practice in San Francisco, California from 1961–1963, as well as in Sacramento, California from 1963–1975. From 1965 to 1988, he was a Professor of Constitutional Law at the McGeorge School of Law, University of the Pacific. He has served in numerous positions during his career, including as a member of the California Army National Guard in 1961, the board of the Federal Judicial Center from 1987–1988, and two committees of the Judicial Conference of the United States: the Advisory Panel on Financial Disclosure Reports and Judicial Activities, subsequently renamed the Advisory Committee on Codes of Conduct, from 1979–1987, and the Committee on Pacific Territories from 1979–1990, which he chaired from 1982–1990. He was appointed to the United States Court of Appeals for the Ninth Circuit in 1975. President Reagan nominated him as an Associate Justice of the Supreme Court, and he took his seat February 18, 1988.
During an interview with legal writing expert Bryan Garner in “The Scribes Journal of Legal Writing” Justice Anthony Kennedy explains:
You must convince the parties that you’ve understood their arguments. You must convince the attorneys that you’ve understood the law. And if it’s a case of public importance, you have a different and much more difficult objective. You must command allegiance to your opinion. You must command allegiance to the judgment of the Court. This is the common-law tradition.
In Obergefell v. Hodges, Justice Kennedy eloquently ends the majority opinion with the following sentiment:
No union is more profound than marriage, for it embodies the highest ideals of love, fidelity, devotion, sacrifice, and family. In forming a marital union, two people become something greater than once they were. As some of the petitioners in these cases demonstrate, marriage embodies a love that may endure even past death. It would misunderstand these men and women to say they disrespect the idea of marriage. Their plea is that they do respect it, respect it so deeply that they seek to find its fulfillment for themselves. Their hope is not to be condemned to live in loneliness, excluded from one of civilization’s oldest institutions. They ask for equal dignity in the eyes of the law. The Constitution grants them that right.
U.S. Supreme Court Justice Anthony Kennedy is frequently viewed as the Court’s swing vote on social issues and has consequently held special prominence in several politically charged, highly anticipated 5 to 4 decisions.