It's a fire, it's a passion to get out and to create and to innovate. And that I've always enjoyed and I've always been very proud of is that the people I've done business with, the people around me have always made money.

One of our first customers asked me how big we want to be. I said I want to be really big. Later, it bothered me that I answered that way. Now I say I just want to be a great company.

As foreign as it would be for you to go running in regular shoes, I want it to be just as foreign for you not to work out in your Under Armour.

There's an entrepreneur right now, scared to death, making excuses, saying, 'It's not the right time just yet.' There's no such thing as a good time. I started an apparel-manufacturing business in the tech-boom years. I mean, come on. Get out of your garage and go take a chance, and start your business.

Any self-respecting entrepreneur has borrowed money from their mother at some point.

It's a fire, it's a passion to get out and to create and to innovate. And that I've always enjoyed and I've always been very proud of is that the people I've done business with, the people around me have always made money.

I realized early on that I was pretty good at organizing. A lot of it was about control. While my friends were out getting hammered at concerts, I was making money. I am a control freak.