Leaders do stuff that matters.

The populations of most cities around the world continue to grow. The reasonspeople congregate in cities are various and complex, and the dawn of the digital age has not put much of adamper on the human urge to congregate.

Passion. The life of an entrepreneur is occasionally exhilarating, and almost always exhausting. Only unbridled passion for the concept is likely to see you through the 17-hour days (month after month) and the painful mistakes that are part and parcel of the start-up process.

Oh Lord, there it is again. The question;" What kind of business should I start?" Incidentially, it has a twin that also sets me off: "What should I specialize in during the second year of my MBA studies?" Sorry, but those are two of the most profoundly upsetting questions anyone can ask - upsetting because the answer should be obvious: Do what turns you on, not what the statistics say is best.

You are who you go to lunch with! Break bread with cool and you will become more cool. Conversely: break bread with dull and well, you can figure it out.

All business success rests on something labeled a sale, which at least momentarily weds company and customer.

You will be remembered, in the long haul, for the quality of your work, not the quantity of your work. No one evaluates Picasso based on the number of paintings he churned out.