勇于冒险的精神

Coal’s future depends on our ability to make it cleaner and more efficient.

The best programs are written so that computing machines can perform them quickly and so that human beings can understand them clearly. A programmer is ideally an essayist who works with traditional aesthetic and literary forms as well as mathematical concepts, to communicate the way that an algorithm works and to convince a reader that the results will be correct.

The best way to predict the future is to create it.

解决数学问题的喜悦是无与伦比的；这是纯粹的智力胜利的时刻。