Being a father teaches you very quickly that you are not the center of your own universe. That’s one of the gifts of having to wipe poop!

Boy, being a parent is a hard job, I think, because in parenting you want your kids to like you. Too much sometimes. It’s a hard line to find between doing what’s necessary to give them the tools to be good kids and make good decisions and all that, versus just completely not giving them a chance to accomplish anything because you do everything for them. I kind of feel like it’s okay if these kids go out and make a few mistakes, because they’re going to learn. The last ten years have been interesting, because I’m a stepparent to three kids, and I’m a father to two kids, an older and a younger. And it’s a real interesting dynamic.

My greatest joy as a father is to see our children growing up and growing independent, and becoming brilliant ... But also every now and then needing me for something and remembering where I can fit into the world. And one of the great joys you realize is that you need them ... You work for their smile. You work for their joy.

He says that he has the job of his dreams, which is the greatest joy that I can feel, is to have my child say he has the job of his dreams.

I was raised by a heroic single mom, wonderful grandparents -- made incredible sacrifices for me. … But I sure wish I had had a father who was not only present, but involved. Didn't know my dad. And so my whole life, I've tried to be for Michelle and my girls what my father was not for my mother and me. … I want to be a better father, a better husband, a better man.

There are some things about being president that I still have difficulty doing. … For example, faking emotion. Because I feel it is an insult to the people I'm dealing with. For me to feign outrage, for example, feels to me like I'm not taking the American people seriously. I'm absolutely positive that I'm serving the American people better if I'm maintaining my authenticity. And that's an overused word. And these days people practice being authentic. But I'm at my best when I believe what I am saying.

Security. People naturally resist change in our personal lives. … Malia, actually, was the one who brought it up because she says, 'You know, one of the things that happens is sometimes transitions are hard, and I really enjoy my life, and I like how things are going.' And I said, 'Get in the habit of being able to embrace change, and what's new. Because you don't want to live your life where, you are held back because you've gotten too comfortable, and you are afraid of what might be out there around the corner.'

I believe in this country. I believe in the American people. I believe that people are more good than bad. I believe tragic things happen, I think there's evil in the world, but I think that at the end of the day, if we work hard, and if we're true to those things in us that feel true and feel right, that the world gets a little better each time.

You'll see I wear only gray or blue suits. … I'm trying to pare down decisions. I don't want to make decisions about what I'm eating or wearing. Because I have too many other decisions to make. … You need to focus your decision-making energy. You need to routinize yourself. You can't be going through the day distracted by trivia.

If you ask me where has been the one area where I feel that I've been most frustrated and most stymied it is the fact that the United States of America is the one advanced nation on earth in which we do not have sufficient common-sense, gun-safety laws. Even in the face of repeated mass killings. … And for us not to be able to resolve that issue has been something that is distressing. But it is not something that I intend to stop working on in the remaining 18 months.