世界上冇绝对嘅对与错，只有适合唔适合。
真相并不总是表面看起来那样，有时不知道反而更好。
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.