Malcolm Gladwell

"Some Scientists & Technologists like Stokes, Green, Helmholtz, Cavendish, Clausius, Poincar', Rayleigh are men of undeniable genius."

"People like Wayne Gretzky or Yo-Yo Ma or Charlie Wilson all have talents and an affinity for translating thought into action. They're what we might call physical geniuses."

"This kind of obsessive preparation does two things. It creates consistency. Practice is what enables Greg Rusedski to hit a serve at a hundred and twenty-five miles per hour again and again. It's what enables a pianist to play Chopin's double-thirds 'tude at full speed, striking every key with precisely calibrated force. More important, practice changes the way a task is perceived."

"Wayne Gretzky would frequently stay behind after practice, long after everyone had left, flipping pucks to a specific spot in the crease, or aiming shot after shot at the crossbar or the goal post."

"One of the things that set Rusedski apart from lesser players, in other words, is that he is the kind of person who is willing to stand out in the summer sun, repeating the same physical movement again and again, in single-minded pursuit of some fractional improvement in his performance."

"Most top performers practice for around 10,000 hours per year."