Kutcher: "I'm continually trying to make choices that put me against my own comfort zone. As long as you're uncomfortable, it means you're growing."

Kutcher: "I didn't really go the starving-artist route. I kind of went and did massive, commercial things.

Kutcher: "Vulnerability is the essence of romance. It's the art of being uncalculated, the willingness to look foolish, the courage to say, 'This is me, and I'm interested in you enough to show you my flaws with the hope that you may embrace me for all that I am but, more important, all that I am not.'"

Kutcher: "I woke up many mornings not knowing what I'd done the night before. I'm amazed I'm not dead."

Kutcher: "I certainly don't think I'm deserving of taking up space forever as a human. There's a whole generation of people yet to be born that are going to be so much more evolved than I am. I don't want to take up space. They're going to be better equipped to make the world a better place than I am."

Kutcher: "I'm a guy's guy. I don't comb my hair unless I have to, and I don't use lotions or fancy shampoos."

Kutcher: "I trust my government. I actually have a trust for my government with my data, and I trust them to protect me. They've protected me - they've made the best efforts to protect me my whole life."

Kutcher: "Don't settle for what life gives you; make life better and build something."

Kutcher: "The sexiest thing in the entire world is being really smart. And being thoughtful and being generous. Everything else is crap. I promise you. It's just crap that people try to sell to you to make you feel like less. So don't buy it. Be smart. Be thoughtful and be generous."

Kutcher: "There are a lot of perks that come with fame, and with every positive there's a negative, and then it all kind of balances out."

Kutcher: "I think privacy is valuable. You don't have to share everything, and it's healthy to occasionally hit the pause button and ask yourself if you're oversharing. But at the end of the day, if you're not doing anything wrong, you don't have anything to hide."

Kutcher: "Modeling is the best because you have to look hot, which comes easy to me, you know. I'm blessed with that."

Kutcher: "I don't believe that old cliche that good things come to those who wait. I think good things come to those who want something so bad they can't sit still."

Kutcher: "I'll probably never be the best actor in Hollywood, but I hope to be the hardest working."

Kutcher: "A lot of people use social media to share mundane things or for self-glorification. I try to use it to share interesting things with people."

Kutcher: "I am only young once, who cares if I'm a goofball!"

Kutcher: "Life can be a lot broader... when you realize one simple thing: And that is that everything around us that we call life was made up by people who were no smarter than you. And you can build your own life that other people can live in. So build a life. Don't live one. Build one. Find your opportunity, and always be sexy."

Kutcher: "I feel like a fraud... My name is not even actually Ashton. Ashton is my middle name."

Kutcher: "The power of a handwritten letter is greater than ever. It's personal and deliberate and means more than an e-mail or text ever will. It has a unique scent. It requires deciphering. But, most important, it's flawed."

Kutcher: "Always roll up the sleeves on your shirt. It gives the impression that you're working, even if you're not."