The promise of the Internet is being held back by Visa, Master Card, American Express.

The idea of money being something physical is almost entirely a fiction. Sure, you can go to your ATM and pull out cash. And you can feel cash in your back pocket and have some tangible comfort there - but in reality, the majority of your money is a number on a screen.

Judging a child taking his first steps for not being able to run a marathon is shortsighted.

You'll be using digital currency. I think really what will happen is you'll use a combination of bitcoin, ether, your devices, the 'Internet of Things.' We've got billions of devices coming online.

I don't accept the status quo. I do accept Visa, MasterCard, or American Express.

We've weathered a few storms before, like when social networking was considered a fad. I think that we have a track record of being on to something big.