Vaughn Walker, the now retired federal judge who struck down Proposition 8, California's gay marriage ban, as unconstitutional, said Thursday that he believes gay marriage is “an idea whose time has come,” The Bay Citizen reported.

“It does seem to me the notion of people deciding to get married without regard to gender is an idea whose time has come and that eventually will be accepted,” Walker said in answering an audience member's question after giving a lecture at San Francisco's Commonwealth Club.

“It seems to me that will eventually be the outcome,” he said.

Walker ruled on the 2008 voter-approved amendment after hearing 13 days' worth of testimony in a San Francisco courtroom. A three-judge panel of the 9th U.S. Circuit Court of Appeals in February upheld Walker's ruling. But the court's narrow interpretation most likely limits its decision to California.

Prop 8 supporters have appealed the ruling to a broader panel of the appeals court.

Walker said that because of the narrowness of the ruling, the case might not reach the U.S. Supreme Court.

“... there is some question whether Proposition 8 will go to the Supreme Court,” he said. “The Supreme Court could decide not to review the Proposition 8 case.”