Great boss is challenging people in the right way. Leading, not managing. Supporting them by giving them both a platform they can count on and expectations they can stretch for.

But what if I fail? You will. A better question might be, ‘after I fail, what then?’ If you’ve chosen well, after you fail you will be one step closer to succeeding, you will be wiser and stronger and you almost certainly will be more respected by all of those that are afraid to try.

When you think about Uber and Airbnb and the other companies that are turning things upside down, Uber isn't big 'cause they ran a lot of ads. They're big because someone took out their iPhone and said to their friend, watch this, and pressed a button and a car pulled up.

If it were any other way, it would be easy. And if it were any other way, everyone would do it and your work would ultimately be devalued. The yin and yang are clear: without people pushing against your quest to do something worth talking about, it's unlikely it would be worth the journey. Persist.

Deadlines have a lousy name. Call them live-lines instead. That´t what they are.

All great programmers learn the same way. They poke the box. They code something and see what the computer does. They change it and see what the computer does. They repeat the process again and again until they figure out how the box works.

The mirror we hold up to the person next to us is one of the most important pictures she will ever see.