You need to get one thing done well, or else you don't have permission to do anything else.
Larry PageWe have always tried to concentrate on the long term, and to place bets on technology we believe will have a significant impact over time. It's hard to imagine now, but when we started Google most people thought search was a solved problem and that there was no money to be made apart from some banner advertising. We felt the exact opposite: that search quality was very poor, and that awesome user experiences would clearly make money.
Larry Page