"Keep away from people who try to belittle your ambitions. Small people always do that, but the really great make you feel that you, too, can become great."
All-time favorite quote since about 10 years ago. It really isolates out the defining quality of a "great" person: not only have they achieved greatness; they also inspire others to become great.
- Mark Twain
(Good case for moving to a startup hub)