If the risk is fully aligned with your purpose and mission, then it's worth considering.

I founded a launch company called International Microspace when I graduated medical school in 1989. We were trying to build a microsatellite launcher.

Small teams driven by their passion with a clear focus can do extraordinary things. Things that only large corporations and governments could do in the past.

In 1980, during my sophomore year at MIT, I realized that the school didn't have a student space organization. I made posters for a group I called Students for the Exploration and Development of Space and put them up all over campus. Thirty-five people showed up. It was the first thing I ever organized, and it took off!

True disruption means threatening your existing product line and your past investments. Breakthrough products disrupt current lines of businesses.

The best way to become a billionaire is to help a billion people.

What is grit? Grit is refusing to give up. It's persistence. It's making your own luck.