If you start out to solely make money, you will attract the wrong kind of employees.

The hard part is implementing the decision, not making it.

At the end of my life, is it better to say that I empowered people to make great stuff, or that I died with a net worth of $10 billion? Obviously I'm picking the former, although I would not mind both.

The most powerful sign is that your work no longer enchants you - it's not deep, delightful, and mutually satisfying. When this happens, it may be time to look for new challenges.

Second, you need to spread the large amount of information knowledge that you've gained-pooping like an elephant. This means sharing information and discoveries with your fellow employees and occasionally even with your competitors.

The beauty of Goodreads is that you know you’re sowing in a field where everyone, by definition and self-selection, loves to read.

I would consider...Google Plus a push technology. It's closer to Twitter than to Facebook.