Why Brad Pitt says it's his time to 'disappear for a while' after Oscars win

Pitt won the best supporting actor award for "Once Upon a Time... in Hollywood."

After three decades in the business, Brad Pitt won his first Oscar for acting on Sunday and shared what he's looking forward to next.

"I've been doing this for 30 years and I've met so many amazing people along the way, and I do feel a responsibility to that love," Pitt told Robin Roberts for "Good Morning America" backstage at the Dolby Theatre.

The "Once Upon A Time...In Hollywood" star who swept awards season, picked up the coveted Academy Award win for best supporting actor in Quentin Tarantino's film, and hailed both the story and his "phenomenal" cast.

"It's fun, it's an adventure," he said, adding what's next for him after the big win.

"Now, I really think it's my time I disappear for a while and go back to making things," he told Roberts. "I look forward to that."

He also revealed what he believes are the keys to hapiness in Hollywood.

"I’m kinda thinking that may be the answer, staying creative and hanging with your loved ones," he said.

During his acceptance speech, Pitt got political and took a swipe at the GOP-controlled U.S. Senate for not allowing witnesses to testify in the impeachment trial of President Donald Trump.

"They told me I only have 45 seconds up here, which is 45 seconds more than the Senate gave [former national security adviser] John Bolton this week," Pitt said. "I'm thinking maybe Quentin does a movie about it, in the end, the adults do the right thing."

Pitt, who previously won the best picture Oscar for his producing role on "12 Years A Slave" in 2014, also explained backstage that he mentioned Bolton because he was "really disappointed with this week."

"When gamesmanship trumps doing the right thing, it's a sad day," he said. "I don't think we should let it slide."

Pitt, 56, was widely expected to pick up the best supporting actor award, having previously won the Golden Globe, Screen Actors Guild Award and BAFTA Award for the role.

His acceptance speeches have made headlines throughout awards season, not only for his jokes about being single, but also because he made a reference to Prince Harry and Meghan Markle's decision to step down as working members of the royal family.

Pitt stayed away from the jokes in his Oscars speech, even choosing to end it on a sentimental note.

"This is for my kids, who color everything I do," he said.