When something is half price in a supermarket, always find out why.

Every single morning the sun comes up and you get to try again.

I believe that if, at the end, according to our abilities, we have done something to make others a little happier, and something to make ourselves a little happier, that is about the best we can do. To make others less happy is a crime. To make ourselves unhappy is where all crime starts. We must try to contribute joy to the world. That is true no matter what our problems, our health, our circumstances. We must try. I didn’t always know this and am happy I lived long enough to find it out.

We’re not here for long so don’t be wreaking havoc along the way.

The thing actually that I most dislike is cruelty. I can't stand cruel people. And if I see people doing something mean to somebody else, just to make themselves feel important it really gets me mad.

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.

And democracy requires compromise, even when you are 100 percent right. This is hard to explain sometimes. You can be completely right, and you still are going to have to engage folks who disagree with you. If you think that the only way forward is to be as uncompromising as possible, you will feel good about yourself, you will enjoy a certain moral purity, but you're not going to get what you want.

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.

People ask me sometimes, who inspires you, Mr. President? Those quiet heroes all across this country -- some of your parents and grandparents who are sitting here -- no fanfare, no articles written about them, they just persevere. They just do their jobs. They meet their responsibilities. They don't quit. I'm only here because of them. They may not have set out to change the world, but in small, important ways, they did. They certainly changed mine.

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.