Actor Zachary Quinto has said that, despite not wanting to speculate on the upcoming Supreme Court decision in two key equal marriage cases, he hopes it will be a “galvanising moment”.

After several days of speculation on when it would rule, the US Supreme Court has scheduled a final day of opinions for Wednesday. 

The actor of Star Trek fame, made the comments in an interview with the Hollywood Reporter, during which he also said he thought, no matter how the court rules, equal marriage efforts are “an unstoppable wave”, at this point.

Quinto said: “We’ll see what happens… I’m certainly not going to hazard against it to say what happens, but I hope it’s a galvanizing moment, and I’m hopeful that [equal marriage] will be supported and we’ll continue to move forward.”

He went on to say he thought equal marriage is inevitable, no matter which way the court’s opinion, set to be announced on Wednesday, go.

“I think no matter what happens, it’s an unstoppable wave at this point, and I’ve said that before because I really believe it,” he said.

“[Acceptance] might take longer and it might happen tomorrow, but it will happen. Whether that means individually, state by state, or by a sweeping decision, that remains to be seen, but I’ll still do everything I can to fight for and support it and advocate it, and that’s all I can do.”

Quinto revealed in an interview last month that he has “only worked more” since he came out as gay, and said he is glad to have opened up about being gay, because he thinks it had positively affected his career.

He came out as gay in October 2011 to “an overwhelming wave of support,” in an interview with New York magazine and wrote a blog post explaining his decision.

Before making his decision to come out, Quinto had been actively working with the Trevor Project, the It Gets Better initiative, and other pro-equality charities, but he said he felt that coming out had enhanced his work with these groups.

After coming out he wrote on his blog that the suicide of gay 14-year-old Jamey Rodemeyer had spurred him to be open, and on coming out, he said: “I had been thinking about it all the time for a while, just sort of peripherally.”