Your customers can tell you the things that are broken and how they want to be made happy. Listen to them. Make them happy. But don't rely on them to create the future road map for your product or service. That's your job.

I believe that starting any business should be as easy as a 10-year-old starting a lemonade stand.

Leaders don't look backwards to condemn what has already been done; they look forward to create a better future.

Being rich is a good thing. Not just in the obvious sense of benefitting you and your family, but in the broader sense. Profits are not a zero sum game. The more you make, the more of a financial impact you can have.

If you think back to the first sporting event you went to, you don't remember the score, you don't remember a home run, you don't remember a dunk. You remember who you were with. Were you with your mom, your dad, your brother, on a date?

The number-one job of the hedge-fund manager is not to make sure that you can retire with a smile on your face - it's for him to retire with a smile on his face.

Technological change always accelerates. It never stagnates over time. Which means we are going to face the fact that, if nothing in the States changes, we will find ourselves dependent on other countries for almost everything that can and will be manufactured in a quickly approaching future.

If there was a template for success in sports, everyone would follow it. You do the best you can and trust the people you trust.

I grew up in a working class family. People thought I might go work at a mill. My mom wanted me to learn how to lay carpet because she was concerned about my future. Nobody had high hopes for me. But I was a hustler.

If you can't admit a failure, you're not an entrepreneur. You are not a good business person. There's nothing brilliant about what you are doing.

When someone has to go to the hospital because they don't have insurance - and by the way, I think the insurance companies should be out of the mix altogether - but when someone needs health care, and they don't have the ability to pay for it, in our communities, we end up paying for it one way or the other.

I can't say it enough that learning how to learn is one of the greatest skills anyone can have. It's why I advocate that everyone go to college.

Money is a scoreboard where you can rank how you're doing against other people.

Whatever you are studying right now, if you are not getting up to speed on deep learning, neural networks, etc., you lose. We are going through the process where software will automate software, automation will automate automation.

Up until Trump announced his candidacy, the conventional wisdom was that you had to be a professional politician in order to run. You had to have a background that was politically scrubbed. In other words, smart people who didn't live perfect lives could never run.

I believe in lower taxes. I believe in more efficient government. I believe in reducing bureaucracy. I believe that we shouldn't have lobbyists who can go in or former government workers who can come back and lobby.

It is so much easier to be nice, to be respectful, to put yourself in your customers' shoes and try to understand how you might help them before they ask for help, than it is to try to mend a broken customer relationship.

I hate politics. It's slimy. Any job where people pander for votes, I don't like. The country has gotten so partisan that if you're not on my side, you're the enemy. The only thing I ever try to support is a third party, like Unity08. We need more parties and more choice.

Culture is very important to the Mavs. Your best player has to be a fit for what you want the culture of the team to be. He has to be someone who leads by example. Someone who sets the tone in the locker room and on the court. It isn't about who talks the most or the loudest. It is about the demeanor and attitude he brings.

You've never heard me talk about politics all that much, and it's just - I can't think of anybody more dangerous as president than Donald Trump. I can't think of anything worse than with him not having a clue. I mean, could you imagine somebody who doesn't read and doesn't learn trying to deal with the day-to-day changes and challenges of that job?

What I've learned in these 11 years is you just got to stay focused and believe in yourself and trust your own ability and judgment.

'Shark Tank' is fun, but it's all business. We use our own money, and the competition between the sharks is fierce. More importantly, it's an opportunity to invest in businesses that are being watched and considered by millions of people every time it's shown.

With health care, despite the fact that we as a nation have already chosen to provide health care in one form or another to everyone, we have, until Obamacare, chosen to pick the least cost-effective means, a mix of private and public offerings, of providing that care. That makes no sense.

For food service industry and retail, I'm for the minimum wage being increased to at least $12. Not for manufacturing. Software and robotics are going to revolutionize manufacturing in the next 10 years. In the meantime, we have to compete with overseas manufacturing.

The number-one job of the hedge-fund manager is not to make sure that you can retire with a smile on your face - it's for him to retire with a smile on his face.

I love being challenged and defending my positions and, when I'm wrong, learning from the exchange. It makes me smarter and better as a businessperson.

Donald Trump I wouldn't trust as far as I could throw him.

I liked Trump's honesty because it was different and had a chance to change the business of politics. What I didn't realize he was missing at the time was a complete and utter lack of preparation, knowledge, and common sense.