You need unstoppable people. You want people that are just going to get it done.
Once your product is working, switch from not caring about this to caring about this a little bit.
Wait to start a startup until you come up with an idea that you feel compelled to explore.
You can't be focussed without really great communication
Remember that the idea will expand, and become more ambitious as you go.
You need to have a culture where people have very high quality standards in everything the company does, but still move quickly.