Elena Kagan has been sworn in as the nation’s 112th Supreme Court justice, becoming just the fourth woman to serve on the Court. On Friday, Kagan spoke at the White House alongside President Obama.

Elena Kagan: “This appointment is not just an honor. Much more importantly, it is an obligation — an obligation to protect and preserve the rule of law in this country, an obligation to uphold the rights and liberties afforded by our remarkable Constitution, and an obligation to provide what the inscription on the Supreme Court building promises: equal justice under law.”