“All my friends were in college when I was making 'Superbad.' We were drinking beer and watching movies and eating pizza. It wasn't like I was going to nice restaurants or anything like that, and I lived like a frat guy. Eventually it was time to grow up, be healthy and be responsible. You can't live like a kid forever, you know?”

“'Allen Gregory' came about because we wanted an animated show and we were just tossing around some ideas about me playing a 7-year-old. We thought that would be cool, because we couldn't do that in real life.”

“'Funny People' is my favorite performance of myself to date. Even though it's a comedy and there are serious moments, I really felt like Leo felt like a real person. It didn't feel like I was playing myself. Whether it's a comedy or drama, I just try to make it as realistic as possible.”

“Germany's amongst my top three places in the world I'd like to live.”

“I assume everything I do in life is gonna be a failure, and then if it turns up roses, then I'm psyched.”

“I grew up in the '80s in L.A., so Ice Cube and Magic Johnson are my heroes.”

“I love it, man; I'm 23 years old and I'm lucky enough to write movies as a job! I just feel really blessed and can't believe it's happening.”

“I love my parents. But I'm almost 28 and it's not fun to be asked, 'What are you doing today? What do you want for dinner? When are you going to be home?' It just makes you feel like a kid. It's this juxtaposition of feeling annoyed and really lucky to have people who love you so much.”

“I play a lot of games on my iPhone. There is a game called Rat on a Scooter that I will promote as much as possible because it has brought me so much joy.”

“I really care about this stuff, I care about movies, and you just have to be strong and don't be stupid; freedom of choice is a big responsibility, and I'm lucky enough not to have to just take any movie to pay the rent, so there's no need to be greedy.”

“I run and do a lot of push-ups and eat healthy.”

“I think this movie, 'Moneyball,' symbolizes becoming a man for me, and I think my character becomes a man. It's important to me: I'm becoming a man. I'm taking my life seriously. I'm taking my acting really seriously, and it's important for me to play adults. It's important for me to change and develop as I get older.”

“I was thin in high school and then I gained weight. I went to a nutritionist. I learned for the first time about what things are healthy to eat, basically.”

“I'm an actor, I'm not a comedian, I never was a comedian.”

“It's always better to shock people and change people's expectations than to give them exactly what they think you can do. It's not unexpected for me to be in a comedy film anymore; I'm no longer the underdog in that world. Not that I'm great or good at it or anything, it's just that I've done a bunch of them, so you're not shocked.”

“I've learned through experience of playing different characters, some of whom were jerks, that when you play a character who is pretentious or obnoxious, in any way, it's important to knock them down a peg.”

“I've never had issues with popularity. I was always a popular guy... I've always had friends and loved ones and everything, so it wasn't like, 'Oh man, I gotta fill some void that was left by high school.' I had a great high-school experience.”

“Look, at the same time that I don't want to be a celebrity, I understand that when you make movies you put yourself out in the public eye. I'd be a baby and a fool to be like, 'Why are there cameras taking pictures of me?' when I'm on a billboard for a movie. I think that's a very absurd concept.”

“My heroes are Bill Murray and Dustin Hoffman. Those are the two actors that both do comedies and dramas, seamlessly. Also John C. Reilly and Philip Seymour Hoffman. They're all just great actors, neither comedic nor dramatic. They're just great actors.”

“New Orleans is like the bad-kid island in 'Pinocchio.'”

“Once you make a movie like 'Superbad,' when it's popular and you're the lead, you get offered all kinds of things and there's a temptation to make bad movies either for the money or to maintain your relevance in pop culture.”

“One of the greatest moments of my career was on the road promoting 'Superbad' with Michael Cera and Chris Mintz-Plasse. We were showing the movie at colleges.”

“Professionally, I feel like I won the lottery and I am the luckiest person in the entire world.”

“The fact that the Kardashians could be more popular than a show like 'Mad Men' is disgusting. It's a super disgusting part of our culture, but I still find it funny to make a joke about it.”

“When a movie like 'Superbad' or 'Moneyball' comes out, people make you feel like you're the most important person on the planet. The truth is, you're a billion percent not the most important person on the planet. It's all insulated in your world and no one could care less. It's just a movie.”

“When I first met the world, basically, or introduced myself to people, I was in 'Superbad,' and I feel the same way I felt promoting 'Superbad' in an underdog style that I feel promoting 'Moneyball.'”