" John Henry Holliday believed in science, in rationality, and in free will. He believed in study, in the methodical acquisition and accumulation of useful skills. He believed that he could homestead his future with planning and preparation: sending scouts ahead and settling it with pioneering effort. Above all, he believed in practice, which increased predictability and reduced the element of chance in any situation. The very word made him feel calm. Piano practice. Dental practice. Pistol practice, poker practice. Practice was power. Practice was authority over his own destiny. Luck? That was what fools called ignorance and laziness and despair when they gave themselves up to the turn of a card, and lost, and lost, and lost … "

― Mary Doria Russell , Doc