Hours earlier, the Dallas Buyers Club star beat out fellow nominees Barkhad Abdi (Captain Phillips), Bradley Cooper (American Hustle), Michael Fassbender (12 Years a Slave) and Jonah Hill (The Wolf of Wall Street) in the Best Supporting Actor category. Still reeling from his win, the 42-year-old 30 Seconds to Mars frontman instructed Sadler to "feel the girth and the size" of his gold statuette.
"I never thought you'd say that to me, but I have to admit, I'm kind of enjoying it," Sadler teased the new champ. Leto, charming as ever, then told her, "Dreams happen tonight for both of us, my friend."
Sadler wasn't the only person who got to hold his Oscar, however. "It's fun to share it," said Leto, whose co-star Matthew McConaughey also won Best Actor. "You've got to give it away to keep it."
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He then referenced his touching acceptance speech, saying, "Tonight was a perfect example of that. I had a chance to share it with my mom and my brother and say something about what's going on in places like the Ukraine or Thailand or Venezuela, and of course pay tribute to all the people who've lost their lives due to AIDS, and other people out there who've been criticized because of who they are. It's a great chance to kind of get up there and share some thoughts and some love and support."
When Leto collected his award earlier that night, he told the crowd, "There was a teenage girl who was pregnant with her second child and she was a high school dropout, and was a single mom, but somehow she managed to make a better life for herself and her children. She encouraged her kids to be creative and work hard and to do something special," the actor said. "That girl is my mother and she's here tonight and I just want to say I love you mom and thank you for teaching me to dream."
After giving his brother and band mate a shout-out, he then told the audience, "To all the dreamers out there around the world watching tonight in places like Ukraine and Venezuela, we are here and as you struggle to make your dreams happen, to live the impossible, we're thinking of you tonight."
Leto concluded his acceptance speech by shedding light on the AIDS epidemic: "This is for the 36 million people who have lost the battle to AIDS, and to those of you out there who have ever felt injustice because of who you are or who you love, tonight I stand here in front of the world for you."