Urs’s most significant accomplishment, however, was building the team that built Google. “Your greatest impact as an engineer comes through hiring someone who is as good as you or better,” he exhorted everyone who would listen, “because over the next year, they double your productivity. There’s nothing else you can do to double your productivity. Even if you’re a genius, that’s extremely unlikely to happen.
Urz Hölzle in Douglas Edwards, I’m Feeling Lucky: Confessions of Google Employee Number 59