If you're building a startup or any sort of organization, take a few moments to reflect on the qualities that the people you most enjoy working with embody and the user experience of new people joining your organization, from the offer letter to their first day.

It's good to work for someone else. Because then you appreciate it more when you are an entrepreneur.

As an entrepreneur making decisions for your company, always go back to your first principles of what's important to you and why you started in the first place.

I believe that software, and in fact entire companies, should be run in a way that assumes that the sum of the talent of people outside your walls is greater than the sum of the few you have inside. None of us are as smart as all of us.

Twitter is the ultimate service for the mobile age. Its simplification and constraint of the publishing medium to 140 characters is perfectly complementary to a mobile experience. People still need longer stuff, but they see the headline on Twitter or Facebook.

From the first time I held an iPhone, the space has evolved quickly, and people have shifted from reading content on their desktops to smartphones and iPads, even long-form stuff.

I like to read first thing in the morning. I'm addicted to the Kindle. I read a lot of business books, because I feel like I should figure out how to be a real businessman before someone figures out that I'm not one. I really enjoy reading classics as well, which I try to work in once every two months.