The irony is that the best thing we can do is, well one option, is to quit job we don't like. You don't always have to quit, and quite frankly, option two is to try to help others solve the problem that you are struggling with.

I'm building on purpose. I'm building that tipping point. I'm building that law of diffusion of innovation.

Believing that your competition is stronger and better than you pushes you to better yourselves.

The cost of leadership is self-interest.

When I was in college, my school newspaper accepted an ad from a Holocaust revisionist organization. This would have been offensive on most college campuses across the country, but I went to a school with a very large Jewish population, so the ad, as you might expect, stirred absolute outrage.

Optimists focus on the place they are going. Pessimists focus on the obstacles along the route. To become an optimist simply look ahead.

Time and energy. Those are the most valuable sacrifices leaders can make.