It's probably easier and cheaper to counterfeit hundred-dollar bills than it is to counterfeit Bitcoin.

If you use a bad password, your Bitcoin will get stolen.

I think long-term, Bitcoin is a currency of the Internet. So, even if humans don't use it, routers will use it. Web browsers will use it. Web servers will use it.

China may censor YouTube. China may censor Twitter. They won't be able to censor Bitcoin. There's no central authority. There's no one you can go to and say, 'We're going to turn Bitcoin off.'

Think of Bitcoin as a bank account in the cloud, and it's completely decentralized: not the Swiss government, not the American government. It's all the participants in the network enforcing.

It's important not to think about Bitcoin as a replacement for cash or gold or something that works alongside that; it's to think of it as programmable money. And we just cannot even imagine what that will be used for.