I'd be like, alright, I don't know anything about sales. So I would search for sales on Amazon, get the three top-rated books and just go at it. I did that for marketing, finance, product, engineering. If there was one thing that was really important for me, that was it.

You need that hunger no matter what, because eventually the honeymoon period wears off. Somewhere between printing your business cards that say 'founder' on them and everything else you have to do, you realize, 'Oh, actually this is a ton of work.'

We've had customers from the beginning. The reason people use Dropbox is because they really love it. We think more about who is going to be competing with what we are going to be doing, not with where we started.

The hardest-working people don't work hard because they're disciplined. They work hard because working on an exciting problem is fun.

You become the average of the five people you hang out with.

Don't worry about failure; you only have to be right once.

Surrounding yourself with inspiring people is now just as important as being talented or working hard.