Hard things are valuable; easy things are not so valuable. Reaching the mountaintop is rewarding because it is hard. If it was easy, everybody would do it.

Change the world. Build a business. Have fun.

Marketing, when done well, is about story telling.

I tried to be a ski bum when I stepped away from Twitter, and I wasn't a very good skier.

Every major communication tool on the Internet has spam and abuse problems. All email services, blogging services and social networks have to dedicate a significant amount of resources and time to fighting abuse and protecting their users.

After high school, I enrolled at the University of Nebraska at Lincoln, but I stayed only a year and a half. I felt college was a waste of time; I wanted to start working.

The things that keep nagging at you are the ones worth exploring.